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Finding the Fourth Proportional to 137,411.60, 206,117.40 and 67,254.80

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Solution

The fourth proportional to 137,411.60, 206,117.40 and 67,254.80 is: 100,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,411.60 : 206,117.40 = 67,254.80 : x
  2. Step 2: Convert to fraction form
    137,411.60/206,117.40 = 67,254.80/x
  3. Step 3: Cross multiply
    137,411.60x = 206,117.40 × 67,254.80
  4. Step 4: Simplify right side
    137,411.60x = 13,862,384,513.52
  5. Step 5: Solve for x
    x = 13,862,384,513.52/137,411.60
  6. Step 6: Final answer
    x = 100,882.20

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1.5x scale

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.