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Finding the Fourth Proportional to 113,872.60, 170,663.10 and 87,446.35

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Solution

The fourth proportional to 113,872.60, 170,663.10 and 87,446.35 is: 131,057.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,872.60 : 170,663.10 = 87,446.35 : x
  2. Step 2: Convert to fraction form
    113,872.60/170,663.10 = 87,446.35/x
  3. Step 3: Cross multiply
    113,872.60x = 170,663.10 × 87,446.35
  4. Step 4: Simplify right side
    113,872.60x = 14,923,865,174.69
  5. Step 5: Solve for x
    x = 14,923,865,174.69/113,872.60
  6. Step 6: Final answer
    x = 131,057.56

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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.