Home / 83,039.40-124,559.10-82,261.80

Finding the Fourth Proportional to 83,039.40, 124,559.10 and 82,261.80

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Solution

The fourth proportional to 83,039.40, 124,559.10 and 82,261.80 is: 123,392.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,039.40 : 124,559.10 = 82,261.80 : x
  2. Step 2: Convert to fraction form
    83,039.40/124,559.10 = 82,261.80/x
  3. Step 3: Cross multiply
    83,039.40x = 124,559.10 × 82,261.80
  4. Step 4: Simplify right side
    83,039.40x = 10,246,455,772.38
  5. Step 5: Solve for x
    x = 10,246,455,772.38/83,039.40
  6. Step 6: Final answer
    x = 123,392.70

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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.