Home / 99,738.78-137,619.35-63,454.64

Finding the Fourth Proportional to 99,738.78, 137,619.35 and 63,454.64

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Solution

The fourth proportional to 99,738.78, 137,619.35 and 63,454.64 is: 87,554.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738.78 : 137,619.35 = 63,454.64 : x
  2. Step 2: Convert to fraction form
    99,738.78/137,619.35 = 63,454.64/x
  3. Step 3: Cross multiply
    99,738.78x = 137,619.35 × 63,454.64
  4. Step 4: Simplify right side
    99,738.78x = 8,732,585,305.91
  5. Step 5: Solve for x
    x = 8,732,585,305.91/99,738.78
  6. Step 6: Final answer
    x = 87,554.56

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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.