Home / 143,770.04-198,405.96-80,111.72

Finding the Fourth Proportional to 143,770.04, 198,405.96 and 80,111.72

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Solution

The fourth proportional to 143,770.04, 198,405.96 and 80,111.72 is: 110,556.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,770.04 : 198,405.96 = 80,111.72 : x
  2. Step 2: Convert to fraction form
    143,770.04/198,405.96 = 80,111.72/x
  3. Step 3: Cross multiply
    143,770.04x = 198,405.96 × 80,111.72
  4. Step 4: Simplify right side
    143,770.04x = 15,894,642,713.85
  5. Step 5: Solve for x
    x = 15,894,642,713.85/143,770.04
  6. Step 6: Final answer
    x = 110,556.02

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1.5x scale

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.