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Finding the Fourth Proportional to 144,057.72, 198,809.70 and 80,396.56

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Solution

The fourth proportional to 144,057.72, 198,809.70 and 80,396.56 is: 110,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,057.72 : 198,809.70 = 80,396.56 : x
  2. Step 2: Convert to fraction form
    144,057.72/198,809.70 = 80,396.56/x
  3. Step 3: Cross multiply
    144,057.72x = 198,809.70 × 80,396.56
  4. Step 4: Simplify right side
    144,057.72x = 15,983,615,974.63
  5. Step 5: Solve for x
    x = 15,983,615,974.63/144,057.72
  6. Step 6: Final answer
    x = 110,952.86

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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.