Home / 125,515.29-173,167.80-80,219.78

Finding the Fourth Proportional to 125,515.29, 173,167.80 and 80,219.78

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Solution

The fourth proportional to 125,515.29, 173,167.80 and 80,219.78 is: 110,675.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,515.29 : 173,167.80 = 80,219.78 : x
  2. Step 2: Convert to fraction form
    125,515.29/173,167.80 = 80,219.78/x
  3. Step 3: Cross multiply
    125,515.29x = 173,167.80 × 80,219.78
  4. Step 4: Simplify right side
    125,515.29x = 13,891,482,819.08
  5. Step 5: Solve for x
    x = 13,891,482,819.08/125,515.29
  6. Step 6: Final answer
    x = 110,675.62

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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.