Home / 100,179.46-150,342.75-80,693.29

Finding the Fourth Proportional to 100,179.46, 150,342.75 and 80,693.29

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Solution

The fourth proportional to 100,179.46, 150,342.75 and 80,693.29 is: 121,099.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,179.46 : 150,342.75 = 80,693.29 : x
  2. Step 2: Convert to fraction form
    100,179.46/150,342.75 = 80,693.29/x
  3. Step 3: Cross multiply
    100,179.46x = 150,342.75 × 80,693.29
  4. Step 4: Simplify right side
    100,179.46x = 12,131,651,125.15
  5. Step 5: Solve for x
    x = 12,131,651,125.15/100,179.46
  6. Step 6: Final answer
    x = 121,099.19

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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.