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Finding the Fourth Proportional to 169,862.60, 254,793.90 and 85,881.80

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Solution

The fourth proportional to 169,862.60, 254,793.90 and 85,881.80 is: 128,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,862.60 : 254,793.90 = 85,881.80 : x
  2. Step 2: Convert to fraction form
    169,862.60/254,793.90 = 85,881.80/x
  3. Step 3: Cross multiply
    169,862.60x = 254,793.90 × 85,881.80
  4. Step 4: Simplify right side
    169,862.60x = 21,882,158,761.02
  5. Step 5: Solve for x
    x = 21,882,158,761.02/169,862.60
  6. Step 6: Final answer
    x = 128,822.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.