Home / 99,960.40-137,949.04-54,641.41

Finding the Fourth Proportional to 99,960.40, 137,949.04 and 54,641.41

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Solution

The fourth proportional to 99,960.40, 137,949.04 and 54,641.41 is: 75,407.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,960.40 : 137,949.04 = 54,641.41 : x
  2. Step 2: Convert to fraction form
    99,960.40/137,949.04 = 54,641.41/x
  3. Step 3: Cross multiply
    99,960.40x = 137,949.04 × 54,641.41
  4. Step 4: Simplify right side
    99,960.40x = 7,537,730,053.75
  5. Step 5: Solve for x
    x = 7,537,730,053.75/99,960.40
  6. Step 6: Final answer
    x = 75,407.16

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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.