Home / 157,910.50-217,765.89-103,381.30

Finding the Fourth Proportional to 157,910.50, 217,765.89 and 103,381.30

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Solution

The fourth proportional to 157,910.50, 217,765.89 and 103,381.30 is: 142,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,910.50 : 217,765.89 = 103,381.30 : x
  2. Step 2: Convert to fraction form
    157,910.50/217,765.89 = 103,381.30/x
  3. Step 3: Cross multiply
    157,910.50x = 217,765.89 × 103,381.30
  4. Step 4: Simplify right side
    157,910.50x = 22,512,920,803.86
  5. Step 5: Solve for x
    x = 22,512,920,803.86/157,910.50
  6. Step 6: Final answer
    x = 142,567.60

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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.