Home / 144,213.96-199,019.28-79,687.36

Finding the Fourth Proportional to 144,213.96, 199,019.28 and 79,687.36

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Solution

The fourth proportional to 144,213.96, 199,019.28 and 79,687.36 is: 109,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,213.96 : 199,019.28 = 79,687.36 : x
  2. Step 2: Convert to fraction form
    144,213.96/199,019.28 = 79,687.36/x
  3. Step 3: Cross multiply
    144,213.96x = 199,019.28 × 79,687.36
  4. Step 4: Simplify right side
    144,213.96x = 15,859,321,012.30
  5. Step 5: Solve for x
    x = 15,859,321,012.30/144,213.96
  6. Step 6: Final answer
    x = 109,970.78

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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.