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Finding the Fourth Proportional to 157,471.51, 217,310.55 and 85,851.53

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Solution

The fourth proportional to 157,471.51, 217,310.55 and 85,851.53 is: 118,475.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,471.51 : 217,310.55 = 85,851.53 : x
  2. Step 2: Convert to fraction form
    157,471.51/217,310.55 = 85,851.53/x
  3. Step 3: Cross multiply
    157,471.51x = 217,310.55 × 85,851.53
  4. Step 4: Simplify right side
    157,471.51x = 18,656,443,202.64
  5. Step 5: Solve for x
    x = 18,656,443,202.64/157,471.51
  6. Step 6: Final answer
    x = 118,475.04

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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.