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Finding the Fourth Proportional to 143,858.92, 198,525.32 and 80,200.84

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Solution

The fourth proportional to 143,858.92, 198,525.32 and 80,200.84 is: 110,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,858.92 : 198,525.32 = 80,200.84 : x
  2. Step 2: Convert to fraction form
    143,858.92/198,525.32 = 80,200.84/x
  3. Step 3: Cross multiply
    143,858.92x = 198,525.32 × 80,200.84
  4. Step 4: Simplify right side
    143,858.92x = 15,921,897,425.27
  5. Step 5: Solve for x
    x = 15,921,897,425.27/143,858.92
  6. Step 6: Final answer
    x = 110,677.16

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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.