Home / 99,766.28-149,649.40-66,551.20

Finding the Fourth Proportional to 99,766.28, 149,649.40 and 66,551.20

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Solution

The fourth proportional to 99,766.28, 149,649.40 and 66,551.20 is: 99,826.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,766.28 : 149,649.40 = 66,551.20 : x
  2. Step 2: Convert to fraction form
    99,766.28/149,649.40 = 66,551.20/x
  3. Step 3: Cross multiply
    99,766.28x = 149,649.40 × 66,551.20
  4. Step 4: Simplify right side
    99,766.28x = 9,959,347,149.28
  5. Step 5: Solve for x
    x = 9,959,347,149.28/99,766.28
  6. Step 6: Final answer
    x = 99,826.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.