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Finding the Fourth Proportional to 125,832.95, 173,656.95 and 72,121.42

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Solution

The fourth proportional to 125,832.95, 173,656.95 and 72,121.42 is: 99,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,832.95 : 173,656.95 = 72,121.42 : x
  2. Step 2: Convert to fraction form
    125,832.95/173,656.95 = 72,121.42/x
  3. Step 3: Cross multiply
    125,832.95x = 173,656.95 × 72,121.42
  4. Step 4: Simplify right side
    125,832.95x = 12,524,386,314.40
  5. Step 5: Solve for x
    x = 12,524,386,314.40/125,832.95
  6. Step 6: Final answer
    x = 99,531.85

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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.