Home / 78,732,078.20-118,098,117.30-69,166,140.20

Finding the Fourth Proportional to 78,732,078.20, 118,098,117.30 and 69,166,140.20

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Solution

The fourth proportional to 78,732,078.20, 118,098,117.30 and 69,166,140.20 is: 103,749,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,078.20 : 118,098,117.30 = 69,166,140.20 : x
  2. Step 2: Convert to fraction form
    78,732,078.20/118,098,117.30 = 69,166,140.20/x
  3. Step 3: Cross multiply
    78,732,078.20x = 118,098,117.30 × 69,166,140.20
  4. Step 4: Simplify right side
    78,732,078.20x = 8,168,390,938,527,846
  5. Step 5: Solve for x
    x = 8,168,390,938,527,846/78,732,078.20
  6. Step 6: Final answer
    x = 103,749,210.30

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Double scale
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Similar ratio
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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.