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Finding the Fourth Proportional to 157,292.68, 217,056.42 and 85,672.36

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Solution

The fourth proportional to 157,292.68, 217,056.42 and 85,672.36 is: 118,223.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,292.68 : 217,056.42 = 85,672.36 : x
  2. Step 2: Convert to fraction form
    157,292.68/217,056.42 = 85,672.36/x
  3. Step 3: Cross multiply
    157,292.68x = 217,056.42 × 85,672.36
  4. Step 4: Simplify right side
    157,292.68x = 18,595,735,754.55
  5. Step 5: Solve for x
    x = 18,595,735,754.55/157,292.68
  6. Step 6: Final answer
    x = 118,223.78

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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.