Home / 131,125.62-181,036.14-90,824.88

Finding the Fourth Proportional to 131,125.62, 181,036.14 and 90,824.88

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Solution

The fourth proportional to 131,125.62, 181,036.14 and 90,824.88 is: 125,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,125.62 : 181,036.14 = 90,824.88 : x
  2. Step 2: Convert to fraction form
    131,125.62/181,036.14 = 90,824.88/x
  3. Step 3: Cross multiply
    131,125.62x = 181,036.14 × 90,824.88
  4. Step 4: Simplify right side
    131,125.62x = 16,442,585,691.16
  5. Step 5: Solve for x
    x = 16,442,585,691.16/131,125.62
  6. Step 6: Final answer
    x = 125,395.68

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1.5x scale

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.