Home / 287,882.12-431,836.14-88,187.96

Finding the Fourth Proportional to 287,882.12, 431,836.14 and 88,187.96

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Solution

The fourth proportional to 287,882.12, 431,836.14 and 88,187.96 is: 132,285.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,882.12 : 431,836.14 = 88,187.96 : x
  2. Step 2: Convert to fraction form
    287,882.12/431,836.14 = 88,187.96/x
  3. Step 3: Cross multiply
    287,882.12x = 431,836.14 × 88,187.96
  4. Step 4: Simplify right side
    287,882.12x = 38,082,748,240.87
  5. Step 5: Solve for x
    x = 38,082,748,240.87/287,882.12
  6. Step 6: Final answer
    x = 132,285.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.