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Finding the Fourth Proportional to 131,058, 180,863.88 and 74,471.76

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Solution

The fourth proportional to 131,058, 180,863.88 and 74,471.76 is: 102,773.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,058 : 180,863.88 = 74,471.76 : x
  2. Step 2: Convert to fraction form
    131,058/180,863.88 = 74,471.76/x
  3. Step 3: Cross multiply
    131,058x = 180,863.88 × 74,471.76
  4. Step 4: Simplify right side
    131,058x = 13,469,251,464.03
  5. Step 5: Solve for x
    x = 13,469,251,464.03/131,058
  6. Step 6: Final answer
    x = 102,773.21

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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.