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Finding the Fourth Proportional to 144,057.22, 198,809.96 and 79,538.90

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Solution

The fourth proportional to 144,057.22, 198,809.96 and 79,538.90 is: 109,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,057.22 : 198,809.96 = 79,538.90 : x
  2. Step 2: Convert to fraction form
    144,057.22/198,809.96 = 79,538.90/x
  3. Step 3: Cross multiply
    144,057.22x = 198,809.96 × 79,538.90
  4. Step 4: Simplify right side
    144,057.22x = 15,813,124,135.70
  5. Step 5: Solve for x
    x = 15,813,124,135.70/144,057.22
  6. Step 6: Final answer
    x = 109,769.75

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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.