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Finding the Fourth Proportional to 125,756.48, 173,560.92 and 115,127.12

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Solution

The fourth proportional to 125,756.48, 173,560.92 and 115,127.12 is: 158,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,756.48 : 173,560.92 = 115,127.12 : x
  2. Step 2: Convert to fraction form
    125,756.48/173,560.92 = 115,127.12/x
  3. Step 3: Cross multiply
    125,756.48x = 173,560.92 × 115,127.12
  4. Step 4: Simplify right side
    125,756.48x = 19,981,568,864.15
  5. Step 5: Solve for x
    x = 19,981,568,864.15/125,756.48
  6. Step 6: Final answer
    x = 158,890.97

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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.