Home / 99,766.81-137,681.10-54,447.71

Finding the Fourth Proportional to 99,766.81, 137,681.10 and 54,447.71

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Solution

The fourth proportional to 99,766.81, 137,681.10 and 54,447.71 is: 75,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,766.81 : 137,681.10 = 54,447.71 : x
  2. Step 2: Convert to fraction form
    99,766.81/137,681.10 = 54,447.71/x
  3. Step 3: Cross multiply
    99,766.81x = 137,681.10 × 54,447.71
  4. Step 4: Simplify right side
    99,766.81x = 7,496,419,712.70
  5. Step 5: Solve for x
    x = 7,496,419,712.70/99,766.81
  6. Step 6: Final answer
    x = 75,139.42

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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.