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Finding the Fourth Proportional to 131,348, 181,260.24 and 71,732

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Solution

The fourth proportional to 131,348, 181,260.24 and 71,732 is: 98,990.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,348 : 181,260.24 = 71,732 : x
  2. Step 2: Convert to fraction form
    131,348/181,260.24 = 71,732/x
  3. Step 3: Cross multiply
    131,348x = 181,260.24 × 71,732
  4. Step 4: Simplify right side
    131,348x = 13,002,159,535.68
  5. Step 5: Solve for x
    x = 13,002,159,535.68/131,348
  6. Step 6: Final answer
    x = 98,990.16

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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.