Home / 87,816.60-131,768.10-66,749.40

Finding the Fourth Proportional to 87,816.60, 131,768.10 and 66,749.40

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Solution

The fourth proportional to 87,816.60, 131,768.10 and 66,749.40 is: 100,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,816.60 : 131,768.10 = 66,749.40 : x
  2. Step 2: Convert to fraction form
    87,816.60/131,768.10 = 66,749.40/x
  3. Step 3: Cross multiply
    87,816.60x = 131,768.10 × 66,749.40
  4. Step 4: Simplify right side
    87,816.60x = 8,795,441,614.14
  5. Step 5: Solve for x
    x = 8,795,441,614.14/87,816.60
  6. Step 6: Final answer
    x = 100,156.94

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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.