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Finding the Fourth Proportional to 157,571.19, 217,449.63 and 85,951.53

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Solution

The fourth proportional to 157,571.19, 217,449.63 and 85,951.53 is: 118,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,571.19 : 217,449.63 = 85,951.53 : x
  2. Step 2: Convert to fraction form
    157,571.19/217,449.63 = 85,951.53/x
  3. Step 3: Cross multiply
    157,571.19x = 217,449.63 × 85,951.53
  4. Step 4: Simplify right side
    157,571.19x = 18,690,128,396.43
  5. Step 5: Solve for x
    x = 18,690,128,396.43/157,571.19
  6. Step 6: Final answer
    x = 118,613.87

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1.5x scale

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.