Home / 132,419.25-182,753.79-78,703.74

Finding the Fourth Proportional to 132,419.25, 182,753.79 and 78,703.74

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Solution

The fourth proportional to 132,419.25, 182,753.79 and 78,703.74 is: 108,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,419.25 : 182,753.79 = 78,703.74 : x
  2. Step 2: Convert to fraction form
    132,419.25/182,753.79 = 78,703.74/x
  3. Step 3: Cross multiply
    132,419.25x = 182,753.79 × 78,703.74
  4. Step 4: Simplify right side
    132,419.25x = 14,383,406,772.17
  5. Step 5: Solve for x
    x = 14,383,406,772.17/132,419.25
  6. Step 6: Final answer
    x = 108,620.21

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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.