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Finding the Fourth Proportional to 159,899, 220,686.54 and 92,869.88

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Solution

The fourth proportional to 159,899, 220,686.54 and 92,869.88 is: 128,175.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,899 : 220,686.54 = 92,869.88 : x
  2. Step 2: Convert to fraction form
    159,899/220,686.54 = 92,869.88/x
  3. Step 3: Cross multiply
    159,899x = 220,686.54 × 92,869.88
  4. Step 4: Simplify right side
    159,899x = 20,495,132,487.42
  5. Step 5: Solve for x
    x = 20,495,132,487.42/159,899
  6. Step 6: Final answer
    x = 128,175.49

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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.