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Finding the Fourth Proportional to 125,974, 173,829 and 72,256.24

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Solution

The fourth proportional to 125,974, 173,829 and 72,256.24 is: 99,704.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,974 : 173,829 = 72,256.24 : x
  2. Step 2: Convert to fraction form
    125,974/173,829 = 72,256.24/x
  3. Step 3: Cross multiply
    125,974x = 173,829 × 72,256.24
  4. Step 4: Simplify right side
    125,974x = 12,560,229,942.96
  5. Step 5: Solve for x
    x = 12,560,229,942.96/125,974
  6. Step 6: Final answer
    x = 99,704.94

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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.