Home / 99,394.38-137,164.14-56,977.56

Finding the Fourth Proportional to 99,394.38, 137,164.14 and 56,977.56

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Solution

The fourth proportional to 99,394.38, 137,164.14 and 56,977.56 is: 78,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,394.38 : 137,164.14 = 56,977.56 : x
  2. Step 2: Convert to fraction form
    99,394.38/137,164.14 = 56,977.56/x
  3. Step 3: Cross multiply
    99,394.38x = 137,164.14 × 56,977.56
  4. Step 4: Simplify right side
    99,394.38x = 7,815,278,016.70
  5. Step 5: Solve for x
    x = 7,815,278,016.70/99,394.38
  6. Step 6: Final answer
    x = 78,628.97

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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.