Home / 99,769.82-137,685.24-54,450.71

Finding the Fourth Proportional to 99,769.82, 137,685.24 and 54,450.71

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Solution

The fourth proportional to 99,769.82, 137,685.24 and 54,450.71 is: 75,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,769.82 : 137,685.24 = 54,450.71 : x
  2. Step 2: Convert to fraction form
    99,769.82/137,685.24 = 54,450.71/x
  3. Step 3: Cross multiply
    99,769.82x = 137,685.24 × 54,450.71
  4. Step 4: Simplify right side
    99,769.82x = 7,497,058,386.09
  5. Step 5: Solve for x
    x = 7,497,058,386.09/99,769.82
  6. Step 6: Final answer
    x = 75,143.55

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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.