Home / 99,540.03-137,366.06-54,218.19

Finding the Fourth Proportional to 99,540.03, 137,366.06 and 54,218.19

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Solution

The fourth proportional to 99,540.03, 137,366.06 and 54,218.19 is: 74,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,540.03 : 137,366.06 = 54,218.19 : x
  2. Step 2: Convert to fraction form
    99,540.03/137,366.06 = 54,218.19/x
  3. Step 3: Cross multiply
    99,540.03x = 137,366.06 × 54,218.19
  4. Step 4: Simplify right side
    99,540.03x = 7,447,738,869.54
  5. Step 5: Solve for x
    x = 7,447,738,869.54/99,540.03
  6. Step 6: Final answer
    x = 74,821.55

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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.