Home / 149,517.90-206,335.35-89,118.90

Finding the Fourth Proportional to 149,517.90, 206,335.35 and 89,118.90

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Solution

The fourth proportional to 149,517.90, 206,335.35 and 89,118.90 is: 122,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,517.90 : 206,335.35 = 89,118.90 : x
  2. Step 2: Convert to fraction form
    149,517.90/206,335.35 = 89,118.90/x
  3. Step 3: Cross multiply
    149,517.90x = 206,335.35 × 89,118.90
  4. Step 4: Simplify right side
    149,517.90x = 18,388,379,423.12
  5. Step 5: Solve for x
    x = 18,388,379,423.12/149,517.90
  6. Step 6: Final answer
    x = 122,984.47

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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.