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Finding the Fourth Proportional to 125,862.56, 173,690.76 and 72,150.80

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Solution

The fourth proportional to 125,862.56, 173,690.76 and 72,150.80 is: 99,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,862.56 : 173,690.76 = 72,150.80 : x
  2. Step 2: Convert to fraction form
    125,862.56/173,690.76 = 72,150.80/x
  3. Step 3: Cross multiply
    125,862.56x = 173,690.76 × 72,150.80
  4. Step 4: Simplify right side
    125,862.56x = 12,531,927,286.61
  5. Step 5: Solve for x
    x = 12,531,927,286.61/125,862.56
  6. Step 6: Final answer
    x = 99,568.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.