Home / 142,180.68-196,208.26-78,517.96

Finding the Fourth Proportional to 142,180.68, 196,208.26 and 78,517.96

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Solution

The fourth proportional to 142,180.68, 196,208.26 and 78,517.96 is: 108,354.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,180.68 : 196,208.26 = 78,517.96 : x
  2. Step 2: Convert to fraction form
    142,180.68/196,208.26 = 78,517.96/x
  3. Step 3: Cross multiply
    142,180.68x = 196,208.26 × 78,517.96
  4. Step 4: Simplify right side
    142,180.68x = 15,405,872,310.35
  5. Step 5: Solve for x
    x = 15,405,872,310.35/142,180.68
  6. Step 6: Final answer
    x = 108,354.19

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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.