Home / 143,999.08-198,718.85-80,336.89

Finding the Fourth Proportional to 143,999.08, 198,718.85 and 80,336.89

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Solution

The fourth proportional to 143,999.08, 198,718.85 and 80,336.89 is: 110,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,999.08 : 198,718.85 = 80,336.89 : x
  2. Step 2: Convert to fraction form
    143,999.08/198,718.85 = 80,336.89/x
  3. Step 3: Cross multiply
    143,999.08x = 198,718.85 × 80,336.89
  4. Step 4: Simplify right side
    143,999.08x = 15,964,454,842.62
  5. Step 5: Solve for x
    x = 15,964,454,842.62/143,999.08
  6. Step 6: Final answer
    x = 110,864.98

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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.