Home / 100,269.06-138,371.13-54,949.92

Finding the Fourth Proportional to 100,269.06, 138,371.13 and 54,949.92

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Solution

The fourth proportional to 100,269.06, 138,371.13 and 54,949.92 is: 75,830.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,269.06 : 138,371.13 = 54,949.92 : x
  2. Step 2: Convert to fraction form
    100,269.06/138,371.13 = 54,949.92/x
  3. Step 3: Cross multiply
    100,269.06x = 138,371.13 × 54,949.92
  4. Step 4: Simplify right side
    100,269.06x = 7,603,482,523.81
  5. Step 5: Solve for x
    x = 7,603,482,523.81/100,269.06
  6. Step 6: Final answer
    x = 75,830.79

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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.