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Finding the Fourth Proportional to 125,854.56, 173,679.84 and 72,142.68

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Solution

The fourth proportional to 125,854.56, 173,679.84 and 72,142.68 is: 99,557.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,854.56 : 173,679.84 = 72,142.68 : x
  2. Step 2: Convert to fraction form
    125,854.56/173,679.84 = 72,142.68/x
  3. Step 3: Cross multiply
    125,854.56x = 173,679.84 × 72,142.68
  4. Step 4: Simplify right side
    125,854.56x = 12,529,729,119.57
  5. Step 5: Solve for x
    x = 12,529,729,119.57/125,854.56
  6. Step 6: Final answer
    x = 99,557.21

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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.