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Finding the Fourth Proportional to 99,649.22, 137,438.12 and 63,842.54

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Solution

The fourth proportional to 99,649.22, 137,438.12 and 63,842.54 is: 88,052.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649.22 : 137,438.12 = 63,842.54 : x
  2. Step 2: Convert to fraction form
    99,649.22/137,438.12 = 63,842.54/x
  3. Step 3: Cross multiply
    99,649.22x = 137,438.12 × 63,842.54
  4. Step 4: Simplify right side
    99,649.22x = 8,774,398,673.62
  5. Step 5: Solve for x
    x = 8,774,398,673.62/99,649.22
  6. Step 6: Final answer
    x = 88,052.86

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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.