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Finding the Fourth Proportional to 157,304.67, 217,082.34 and 85,685.28

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Solution

The fourth proportional to 157,304.67, 217,082.34 and 85,685.28 is: 118,246.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,304.67 : 217,082.34 = 85,685.28 : x
  2. Step 2: Convert to fraction form
    157,304.67/217,082.34 = 85,685.28/x
  3. Step 3: Cross multiply
    157,304.67x = 217,082.34 × 85,685.28
  4. Step 4: Simplify right side
    157,304.67x = 18,600,761,085.96
  5. Step 5: Solve for x
    x = 18,600,761,085.96/157,304.67
  6. Step 6: Final answer
    x = 118,246.72

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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.