Home / 131,132.42-180,788.55-85,732.36

Finding the Fourth Proportional to 131,132.42, 180,788.55 and 85,732.36

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Solution

The fourth proportional to 131,132.42, 180,788.55 and 85,732.36 is: 118,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,132.42 : 180,788.55 = 85,732.36 : x
  2. Step 2: Convert to fraction form
    131,132.42/180,788.55 = 85,732.36/x
  3. Step 3: Cross multiply
    131,132.42x = 180,788.55 × 85,732.36
  4. Step 4: Simplify right side
    131,132.42x = 15,499,428,279.01
  5. Step 5: Solve for x
    x = 15,499,428,279.01/131,132.42
  6. Step 6: Final answer
    x = 118,196.77

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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.