Home / 131,356.50-181,272.18-74,767.88

Finding the Fourth Proportional to 131,356.50, 181,272.18 and 74,767.88

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Solution

The fourth proportional to 131,356.50, 181,272.18 and 74,767.88 is: 103,179.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,356.50 : 181,272.18 = 74,767.88 : x
  2. Step 2: Convert to fraction form
    131,356.50/181,272.18 = 74,767.88/x
  3. Step 3: Cross multiply
    131,356.50x = 181,272.18 × 74,767.88
  4. Step 4: Simplify right side
    131,356.50x = 13,553,335,695.22
  5. Step 5: Solve for x
    x = 13,553,335,695.22/131,356.50
  6. Step 6: Final answer
    x = 103,179.79

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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.