Home / 78,732,014.20-118,098,021.30-68,654,318.20

Finding the Fourth Proportional to 78,732,014.20, 118,098,021.30 and 68,654,318.20

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Solution

The fourth proportional to 78,732,014.20, 118,098,021.30 and 68,654,318.20 is: 102,981,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,014.20 : 118,098,021.30 = 68,654,318.20 : x
  2. Step 2: Convert to fraction form
    78,732,014.20/118,098,021.30 = 68,654,318.20/x
  3. Step 3: Cross multiply
    78,732,014.20x = 118,098,021.30 × 68,654,318.20
  4. Step 4: Simplify right side
    78,732,014.20x = 8,107,939,133,120,578
  5. Step 5: Solve for x
    x = 8,107,939,133,120,578/78,732,014.20
  6. Step 6: Final answer
    x = 102,981,477.30

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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.