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Finding the Fourth Proportional to 83,175.80, 124,569.30 and 81,505.40

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Solution

The fourth proportional to 83,175.80, 124,569.30 and 81,505.40 is: 122,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,175.80 : 124,569.30 = 81,505.40 : x
  2. Step 2: Convert to fraction form
    83,175.80/124,569.30 = 81,505.40/x
  3. Step 3: Cross multiply
    83,175.80x = 124,569.30 × 81,505.40
  4. Step 4: Simplify right side
    83,175.80x = 10,153,070,624.22
  5. Step 5: Solve for x
    x = 10,153,070,624.22/83,175.80
  6. Step 6: Final answer
    x = 122,067.60

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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.