Home / 99,542.84-137,364.36-54,220.61

Finding the Fourth Proportional to 99,542.84, 137,364.36 and 54,220.61

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Solution

The fourth proportional to 99,542.84, 137,364.36 and 54,220.61 is: 74,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,542.84 : 137,364.36 = 54,220.61 : x
  2. Step 2: Convert to fraction form
    99,542.84/137,364.36 = 54,220.61/x
  3. Step 3: Cross multiply
    99,542.84x = 137,364.36 × 54,220.61
  4. Step 4: Simplify right side
    99,542.84x = 7,447,979,391.46
  5. Step 5: Solve for x
    x = 7,447,979,391.46/99,542.84
  6. Step 6: Final answer
    x = 74,821.85

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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.