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Finding the Fourth Proportional to 132,471.31, 182,809.50 and 72,041.79

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Solution

The fourth proportional to 132,471.31, 182,809.50 and 72,041.79 is: 99,417.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,471.31 : 182,809.50 = 72,041.79 : x
  2. Step 2: Convert to fraction form
    132,471.31/182,809.50 = 72,041.79/x
  3. Step 3: Cross multiply
    132,471.31x = 182,809.50 × 72,041.79
  4. Step 4: Simplify right side
    132,471.31x = 13,169,923,609.01
  5. Step 5: Solve for x
    x = 13,169,923,609.01/132,471.31
  6. Step 6: Final answer
    x = 99,417.18

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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.