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Finding the Fourth Proportional to 157,571.76, 217,451.96 and 85,954.36

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Solution

The fourth proportional to 157,571.76, 217,451.96 and 85,954.36 is: 118,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,571.76 : 217,451.96 = 85,954.36 : x
  2. Step 2: Convert to fraction form
    157,571.76/217,451.96 = 85,954.36/x
  3. Step 3: Cross multiply
    157,571.76x = 217,451.96 × 85,954.36
  4. Step 4: Simplify right side
    157,571.76x = 18,690,944,052.55
  5. Step 5: Solve for x
    x = 18,690,944,052.55/157,571.76
  6. Step 6: Final answer
    x = 118,618.62

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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.