Home / 99,643.20-137,429.85-63,836.54

Finding the Fourth Proportional to 99,643.20, 137,429.85 and 63,836.54

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Solution

The fourth proportional to 99,643.20, 137,429.85 and 63,836.54 is: 88,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643.20 : 137,429.85 = 63,836.54 : x
  2. Step 2: Convert to fraction form
    99,643.20/137,429.85 = 63,836.54/x
  3. Step 3: Cross multiply
    99,643.20x = 137,429.85 × 63,836.54
  4. Step 4: Simplify right side
    99,643.20x = 8,773,046,116.72
  5. Step 5: Solve for x
    x = 8,773,046,116.72/99,643.20
  6. Step 6: Final answer
    x = 88,044.60

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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.