Home / 99,403.40-137,178.04-54,081.92

Finding the Fourth Proportional to 99,403.40, 137,178.04 and 54,081.92

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Solution

The fourth proportional to 99,403.40, 137,178.04 and 54,081.92 is: 74,633.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.40 : 137,178.04 = 54,081.92 : x
  2. Step 2: Convert to fraction form
    99,403.40/137,178.04 = 54,081.92/x
  3. Step 3: Cross multiply
    99,403.40x = 137,178.04 × 54,081.92
  4. Step 4: Simplify right side
    99,403.40x = 7,418,852,195.58
  5. Step 5: Solve for x
    x = 7,418,852,195.58/99,403.40
  6. Step 6: Final answer
    x = 74,633.79

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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.