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Finding the Fourth Proportional to 147,773.71, 203,932.61 and 80,705.71

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Solution

The fourth proportional to 147,773.71, 203,932.61 and 80,705.71 is: 111,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,773.71 : 203,932.61 = 80,705.71 : x
  2. Step 2: Convert to fraction form
    147,773.71/203,932.61 = 80,705.71/x
  3. Step 3: Cross multiply
    147,773.71x = 203,932.61 × 80,705.71
  4. Step 4: Simplify right side
    147,773.71x = 16,458,526,082.20
  5. Step 5: Solve for x
    x = 16,458,526,082.20/147,773.71
  6. Step 6: Final answer
    x = 111,376.55

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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.