Home / 132,121.08-182,383.92-81,142.11

Finding the Fourth Proportional to 132,121.08, 182,383.92 and 81,142.11

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Solution

The fourth proportional to 132,121.08, 182,383.92 and 81,142.11 is: 112,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,121.08 : 182,383.92 = 81,142.11 : x
  2. Step 2: Convert to fraction form
    132,121.08/182,383.92 = 81,142.11/x
  3. Step 3: Cross multiply
    132,121.08x = 182,383.92 × 81,142.11
  4. Step 4: Simplify right side
    132,121.08x = 14,799,016,098.87
  5. Step 5: Solve for x
    x = 14,799,016,098.87/132,121.08
  6. Step 6: Final answer
    x = 112,011.01

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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.