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Finding the Fourth Proportional to 99,456.76, 137,268.12 and 63,645.55

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Solution

The fourth proportional to 99,456.76, 137,268.12 and 63,645.55 is: 87,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,456.76 : 137,268.12 = 63,645.55 : x
  2. Step 2: Convert to fraction form
    99,456.76/137,268.12 = 63,645.55/x
  3. Step 3: Cross multiply
    99,456.76x = 137,268.12 × 63,645.55
  4. Step 4: Simplify right side
    99,456.76x = 8,736,504,532.36
  5. Step 5: Solve for x
    x = 8,736,504,532.36/99,456.76
  6. Step 6: Final answer
    x = 87,842.24

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1.5x scale

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.