Home / 103,049.28-154,625.76-76,806.72

Finding the Fourth Proportional to 103,049.28, 154,625.76 and 76,806.72

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Solution

The fourth proportional to 103,049.28, 154,625.76 and 76,806.72 is: 115,248.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,049.28 : 154,625.76 = 76,806.72 : x
  2. Step 2: Convert to fraction form
    103,049.28/154,625.76 = 76,806.72/x
  3. Step 3: Cross multiply
    103,049.28x = 154,625.76 × 76,806.72
  4. Step 4: Simplify right side
    103,049.28x = 11,876,297,453.11
  5. Step 5: Solve for x
    x = 11,876,297,453.11/103,049.28
  6. Step 6: Final answer
    x = 115,248.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.