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Finding the Fourth Proportional to 144,957.52, 217,456.78 and 45,127.79

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Solution

The fourth proportional to 144,957.52, 217,456.78 and 45,127.79 is: 67,698.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,957.52 : 217,456.78 = 45,127.79 : x
  2. Step 2: Convert to fraction form
    144,957.52/217,456.78 = 45,127.79/x
  3. Step 3: Cross multiply
    144,957.52x = 217,456.78 × 45,127.79
  4. Step 4: Simplify right side
    144,957.52x = 9,813,343,901.92
  5. Step 5: Solve for x
    x = 9,813,343,901.92/144,957.52
  6. Step 6: Final answer
    x = 67,698.07

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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.