Home / 131,691.35-181,735.17-77,276.06

Finding the Fourth Proportional to 131,691.35, 181,735.17 and 77,276.06

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Solution

The fourth proportional to 131,691.35, 181,735.17 and 77,276.06 is: 106,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,691.35 : 181,735.17 = 77,276.06 : x
  2. Step 2: Convert to fraction form
    131,691.35/181,735.17 = 77,276.06/x
  3. Step 3: Cross multiply
    131,691.35x = 181,735.17 × 77,276.06
  4. Step 4: Simplify right side
    131,691.35x = 14,043,777,384.08
  5. Step 5: Solve for x
    x = 14,043,777,384.08/131,691.35
  6. Step 6: Final answer
    x = 106,641.61

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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.