Home / 12,145,234,295.70-18,217,851,443.55-7,243,442,961.30

Finding the Fourth Proportional to 12,145,234,295.70, 18,217,851,443.55 and 7,243,442,961.30

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Solution

The fourth proportional to 12,145,234,295.70, 18,217,851,443.55 and 7,243,442,961.30 is: 10,865,164,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,234,295.70 : 18,217,851,443.55 = 7,243,442,961.30 : x
  2. Step 2: Convert to fraction form
    12,145,234,295.70/18,217,851,443.55 = 7,243,442,961.30/x
  3. Step 3: Cross multiply
    12,145,234,295.70x = 18,217,851,443.55 × 7,243,442,961.30
  4. Step 4: Simplify right side
    12,145,234,295.70x = 131,959,967,808,791,281,664
  5. Step 5: Solve for x
    x = 131,959,967,808,791,281,664/12,145,234,295.70
  6. Step 6: Final answer
    x = 10,865,164,441.95

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Double scale
Find fourth proportional to 12,145,234,296.70, 18,217,851,445.05 and 7,243,442,962.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.