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Finding the Fourth Proportional to 83,127.26, 124,690.89 and 20,797.76

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Solution

The fourth proportional to 83,127.26, 124,690.89 and 20,797.76 is: 31,196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,127.26 : 124,690.89 = 20,797.76 : x
  2. Step 2: Convert to fraction form
    83,127.26/124,690.89 = 20,797.76/x
  3. Step 3: Cross multiply
    83,127.26x = 124,690.89 × 20,797.76
  4. Step 4: Simplify right side
    83,127.26x = 2,593,291,204.41
  5. Step 5: Solve for x
    x = 2,593,291,204.41/83,127.26
  6. Step 6: Final answer
    x = 31,196.64

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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.