Home / 142,581.80-196,742.27-78,919.44

Finding the Fourth Proportional to 142,581.80, 196,742.27 and 78,919.44

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Solution

The fourth proportional to 142,581.80, 196,742.27 and 78,919.44 is: 108,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,581.80 : 196,742.27 = 78,919.44 : x
  2. Step 2: Convert to fraction form
    142,581.80/196,742.27 = 78,919.44/x
  3. Step 3: Cross multiply
    142,581.80x = 196,742.27 × 78,919.44
  4. Step 4: Simplify right side
    142,581.80x = 15,526,789,378.13
  5. Step 5: Solve for x
    x = 15,526,789,378.13/142,581.80
  6. Step 6: Final answer
    x = 108,897.42

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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.