Home / 143,800.38-198,456.48-80,129.52

Finding the Fourth Proportional to 143,800.38, 198,456.48 and 80,129.52

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Solution

The fourth proportional to 143,800.38, 198,456.48 and 80,129.52 is: 110,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,800.38 : 198,456.48 = 80,129.52 : x
  2. Step 2: Convert to fraction form
    143,800.38/198,456.48 = 80,129.52/x
  3. Step 3: Cross multiply
    143,800.38x = 198,456.48 × 80,129.52
  4. Step 4: Simplify right side
    143,800.38x = 15,902,222,483.29
  5. Step 5: Solve for x
    x = 15,902,222,483.29/143,800.38
  6. Step 6: Final answer
    x = 110,585.40

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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.