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Finding the Fourth Proportional to 150,545.79, 207,693.92 and 86,871.29

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Solution

The fourth proportional to 150,545.79, 207,693.92 and 86,871.29 is: 119,848.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,545.79 : 207,693.92 = 86,871.29 : x
  2. Step 2: Convert to fraction form
    150,545.79/207,693.92 = 86,871.29/x
  3. Step 3: Cross multiply
    150,545.79x = 207,693.92 × 86,871.29
  4. Step 4: Simplify right side
    150,545.79x = 18,042,637,934.27
  5. Step 5: Solve for x
    x = 18,042,637,934.27/150,545.79
  6. Step 6: Final answer
    x = 119,848.17

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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.