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Finding the Fourth Proportional to 102,062.15, 140,863.20 and 65,753.39

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Solution

The fourth proportional to 102,062.15, 140,863.20 and 65,753.39 is: 90,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,062.15 : 140,863.20 = 65,753.39 : x
  2. Step 2: Convert to fraction form
    102,062.15/140,863.20 = 65,753.39/x
  3. Step 3: Cross multiply
    102,062.15x = 140,863.20 × 65,753.39
  4. Step 4: Simplify right side
    102,062.15x = 9,262,232,221.93
  5. Step 5: Solve for x
    x = 9,262,232,221.93/102,062.15
  6. Step 6: Final answer
    x = 90,750.91

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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.