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Finding the Fourth Proportional to 125,380.65, 173,028.89 and 71,672.79

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Solution

The fourth proportional to 125,380.65, 173,028.89 and 71,672.79 is: 98,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,380.65 : 173,028.89 = 71,672.79 : x
  2. Step 2: Convert to fraction form
    125,380.65/173,028.89 = 71,672.79/x
  3. Step 3: Cross multiply
    125,380.65x = 173,028.89 × 71,672.79
  4. Step 4: Simplify right side
    125,380.65x = 12,401,464,124.94
  5. Step 5: Solve for x
    x = 12,401,464,124.94/125,380.65
  6. Step 6: Final answer
    x = 98,910.51

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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.