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Finding the Fourth Proportional to 157,372.88, 217,174.67 and 85,752.88

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Solution

The fourth proportional to 157,372.88, 217,174.67 and 85,752.88 is: 118,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,372.88 : 217,174.67 = 85,752.88 : x
  2. Step 2: Convert to fraction form
    157,372.88/217,174.67 = 85,752.88/x
  3. Step 3: Cross multiply
    157,372.88x = 217,174.67 × 85,752.88
  4. Step 4: Simplify right side
    157,372.88x = 18,623,352,765.42
  5. Step 5: Solve for x
    x = 18,623,352,765.42/157,372.88
  6. Step 6: Final answer
    x = 118,339.03

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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.