Home / 147,981,128.38-204,214,394.14-81,906,215.92

Finding the Fourth Proportional to 147,981,128.38, 204,214,394.14 and 81,906,215.92

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Solution

The fourth proportional to 147,981,128.38, 204,214,394.14 and 81,906,215.92 is: 113,030,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,981,128.38 : 204,214,394.14 = 81,906,215.92 : x
  2. Step 2: Convert to fraction form
    147,981,128.38/204,214,394.14 = 81,906,215.92/x
  3. Step 3: Cross multiply
    147,981,128.38x = 204,214,394.14 × 81,906,215.92
  4. Step 4: Simplify right side
    147,981,128.38x = 16,726,428,260,402,822
  5. Step 5: Solve for x
    x = 16,726,428,260,402,822/147,981,128.38
  6. Step 6: Final answer
    x = 113,030,819.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.