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Finding the Fourth Proportional to 143,999.83, 198,719.89 and 80,337.65

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Solution

The fourth proportional to 143,999.83, 198,719.89 and 80,337.65 is: 110,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,999.83 : 198,719.89 = 80,337.65 : x
  2. Step 2: Convert to fraction form
    143,999.83/198,719.89 = 80,337.65/x
  3. Step 3: Cross multiply
    143,999.83x = 198,719.89 × 80,337.65
  4. Step 4: Simplify right side
    143,999.83x = 15,964,687,776.41
  5. Step 5: Solve for x
    x = 15,964,687,776.41/143,999.83
  6. Step 6: Final answer
    x = 110,866.02

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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.