Home / 78,732,016.70-118,098,025.05-68,654,320.70

Finding the Fourth Proportional to 78,732,016.70, 118,098,025.05 and 68,654,320.70

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Solution

The fourth proportional to 78,732,016.70, 118,098,025.05 and 68,654,320.70 is: 102,981,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,016.70 : 118,098,025.05 = 68,654,320.70 : x
  2. Step 2: Convert to fraction form
    78,732,016.70/118,098,025.05 = 68,654,320.70/x
  3. Step 3: Cross multiply
    78,732,016.70x = 118,098,025.05 × 68,654,320.70
  4. Step 4: Simplify right side
    78,732,016.70x = 8,107,939,685,819,334
  5. Step 5: Solve for x
    x = 8,107,939,685,819,334/78,732,016.70
  6. Step 6: Final answer
    x = 102,981,481.05

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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.