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Finding the Fourth Proportional to 125,873.52, 173,759.88 and 90,001.20

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Solution

The fourth proportional to 125,873.52, 173,759.88 and 90,001.20 is: 124,240.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,873.52 : 173,759.88 = 90,001.20 : x
  2. Step 2: Convert to fraction form
    125,873.52/173,759.88 = 90,001.20/x
  3. Step 3: Cross multiply
    125,873.52x = 173,759.88 × 90,001.20
  4. Step 4: Simplify right side
    125,873.52x = 15,638,597,711.86
  5. Step 5: Solve for x
    x = 15,638,597,711.86/125,873.52
  6. Step 6: Final answer
    x = 124,240.57

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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.