Home / 12,020,118,438.15-18,030,178,217.70-8,234,778,122.79

Finding the Fourth Proportional to 12,020,118,438.15, 18,030,178,217.70 and 8,234,778,122.79

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Solution

The fourth proportional to 12,020,118,438.15, 18,030,178,217.70 and 8,234,778,122.79 is: 12,352,167,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020,118,438.15 : 18,030,178,217.70 = 8,234,778,122.79 : x
  2. Step 2: Convert to fraction form
    12,020,118,438.15/18,030,178,217.70 = 8,234,778,122.79/x
  3. Step 3: Cross multiply
    12,020,118,438.15x = 18,030,178,217.70 × 8,234,778,122.79
  4. Step 4: Simplify right side
    12,020,118,438.15x = 148,474,517,137,120,755,712
  5. Step 5: Solve for x
    x = 148,474,517,137,120,755,712/12,020,118,438.15
  6. Step 6: Final answer
    x = 12,352,167,568.16

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Double scale
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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.