Home / 155,935.20-215,190.30-87,951.97

Finding the Fourth Proportional to 155,935.20, 215,190.30 and 87,951.97

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Solution

The fourth proportional to 155,935.20, 215,190.30 and 87,951.97 is: 121,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,935.20 : 215,190.30 = 87,951.97 : x
  2. Step 2: Convert to fraction form
    155,935.20/215,190.30 = 87,951.97/x
  3. Step 3: Cross multiply
    155,935.20x = 215,190.30 × 87,951.97
  4. Step 4: Simplify right side
    155,935.20x = 18,926,411,408.70
  5. Step 5: Solve for x
    x = 18,926,411,408.70/155,935.20
  6. Step 6: Final answer
    x = 121,373.56

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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.