Home / 137,612.52-206,418.60-90,854.28

Finding the Fourth Proportional to 137,612.52, 206,418.60 and 90,854.28

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Solution

The fourth proportional to 137,612.52, 206,418.60 and 90,854.28 is: 136,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,612.52 : 206,418.60 = 90,854.28 : x
  2. Step 2: Convert to fraction form
    137,612.52/206,418.60 = 90,854.28/x
  3. Step 3: Cross multiply
    137,612.52x = 206,418.60 × 90,854.28
  4. Step 4: Simplify right side
    137,612.52x = 18,754,013,281.61
  5. Step 5: Solve for x
    x = 18,754,013,281.61/137,612.52
  6. Step 6: Final answer
    x = 136,281.30

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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.