Home / 87,693.40-131,549.70-84,928.60

Finding the Fourth Proportional to 87,693.40, 131,549.70 and 84,928.60

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Solution

The fourth proportional to 87,693.40, 131,549.70 and 84,928.60 is: 127,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,693.40 : 131,549.70 = 84,928.60 : x
  2. Step 2: Convert to fraction form
    87,693.40/131,549.70 = 84,928.60/x
  3. Step 3: Cross multiply
    87,693.40x = 131,549.70 × 84,928.60
  4. Step 4: Simplify right side
    87,693.40x = 11,172,331,851.42
  5. Step 5: Solve for x
    x = 11,172,331,851.42/87,693.40
  6. Step 6: Final answer
    x = 127,402.20

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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.