Home / 149,680.40-206,553.80-89,219.86

Finding the Fourth Proportional to 149,680.40, 206,553.80 and 89,219.86

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Solution

The fourth proportional to 149,680.40, 206,553.80 and 89,219.86 is: 123,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,680.40 : 206,553.80 = 89,219.86 : x
  2. Step 2: Convert to fraction form
    149,680.40/206,553.80 = 89,219.86/x
  3. Step 3: Cross multiply
    149,680.40x = 206,553.80 × 89,219.86
  4. Step 4: Simplify right side
    149,680.40x = 18,428,701,118.47
  5. Step 5: Solve for x
    x = 18,428,701,118.47/149,680.40
  6. Step 6: Final answer
    x = 123,120.34

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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.