Home / 143,768.04-198,403.20-80,109.72

Finding the Fourth Proportional to 143,768.04, 198,403.20 and 80,109.72

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Solution

The fourth proportional to 143,768.04, 198,403.20 and 80,109.72 is: 110,553.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,768.04 : 198,403.20 = 80,109.72 : x
  2. Step 2: Convert to fraction form
    143,768.04/198,403.20 = 80,109.72/x
  3. Step 3: Cross multiply
    143,768.04x = 198,403.20 × 80,109.72
  4. Step 4: Simplify right side
    143,768.04x = 15,894,024,799.10
  5. Step 5: Solve for x
    x = 15,894,024,799.10/143,768.04
  6. Step 6: Final answer
    x = 110,553.26

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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.