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Finding the Fourth Proportional to 83,092.60, 124,638.90 and 72,724.60

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Solution

The fourth proportional to 83,092.60, 124,638.90 and 72,724.60 is: 109,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,092.60 : 124,638.90 = 72,724.60 : x
  2. Step 2: Convert to fraction form
    83,092.60/124,638.90 = 72,724.60/x
  3. Step 3: Cross multiply
    83,092.60x = 124,638.90 × 72,724.60
  4. Step 4: Simplify right side
    83,092.60x = 9,064,314,146.94
  5. Step 5: Solve for x
    x = 9,064,314,146.94/83,092.60
  6. Step 6: Final answer
    x = 109,086.90

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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.