Home / 143,340.39-197,816.49-79,679.25

Finding the Fourth Proportional to 143,340.39, 197,816.49 and 79,679.25

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Solution

The fourth proportional to 143,340.39, 197,816.49 and 79,679.25 is: 109,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,340.39 : 197,816.49 = 79,679.25 : x
  2. Step 2: Convert to fraction form
    143,340.39/197,816.49 = 79,679.25/x
  3. Step 3: Cross multiply
    143,340.39x = 197,816.49 × 79,679.25
  4. Step 4: Simplify right side
    143,340.39x = 15,761,869,560.83
  5. Step 5: Solve for x
    x = 15,761,869,560.83/143,340.39
  6. Step 6: Final answer
    x = 109,961.12

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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.