Home / 149,860.10-206,836.46-89,400.48

Finding the Fourth Proportional to 149,860.10, 206,836.46 and 89,400.48

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Solution

The fourth proportional to 149,860.10, 206,836.46 and 89,400.48 is: 123,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,860.10 : 206,836.46 = 89,400.48 : x
  2. Step 2: Convert to fraction form
    149,860.10/206,836.46 = 89,400.48/x
  3. Step 3: Cross multiply
    149,860.10x = 206,836.46 × 89,400.48
  4. Step 4: Simplify right side
    149,860.10x = 18,491,278,805.50
  5. Step 5: Solve for x
    x = 18,491,278,805.50/149,860.10
  6. Step 6: Final answer
    x = 123,390.27

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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.