Home / 99,660.57-137,532.66-54,338.18

Finding the Fourth Proportional to 99,660.57, 137,532.66 and 54,338.18

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Solution

The fourth proportional to 99,660.57, 137,532.66 and 54,338.18 is: 74,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660.57 : 137,532.66 = 54,338.18 : x
  2. Step 2: Convert to fraction form
    99,660.57/137,532.66 = 54,338.18/x
  3. Step 3: Cross multiply
    99,660.57x = 137,532.66 × 54,338.18
  4. Step 4: Simplify right side
    99,660.57x = 7,473,274,434.96
  5. Step 5: Solve for x
    x = 7,473,274,434.96/99,660.57
  6. Step 6: Final answer
    x = 74,987.27

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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.