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Finding the Fourth Proportional to 132,555.56, 182,921.20 and 72,126.46

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Solution

The fourth proportional to 132,555.56, 182,921.20 and 72,126.46 is: 99,531.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,555.56 : 182,921.20 = 72,126.46 : x
  2. Step 2: Convert to fraction form
    132,555.56/182,921.20 = 72,126.46/x
  3. Step 3: Cross multiply
    132,555.56x = 182,921.20 × 72,126.46
  4. Step 4: Simplify right side
    132,555.56x = 13,193,458,614.95
  5. Step 5: Solve for x
    x = 13,193,458,614.95/132,555.56
  6. Step 6: Final answer
    x = 99,531.54

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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.