Home / 99,403.16-137,174.90-54,081.54

Finding the Fourth Proportional to 99,403.16, 137,174.90 and 54,081.54

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Solution

The fourth proportional to 99,403.16, 137,174.90 and 54,081.54 is: 74,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.16 : 137,174.90 = 54,081.54 : x
  2. Step 2: Convert to fraction form
    99,403.16/137,174.90 = 54,081.54/x
  3. Step 3: Cross multiply
    99,403.16x = 137,174.90 × 54,081.54
  4. Step 4: Simplify right side
    99,403.16x = 7,418,629,570.94
  5. Step 5: Solve for x
    x = 7,418,629,570.94/99,403.16
  6. Step 6: Final answer
    x = 74,631.73

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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.