Home / 143,764.24-198,383.16-87,206.80

Finding the Fourth Proportional to 143,764.24, 198,383.16 and 87,206.80

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Solution

The fourth proportional to 143,764.24, 198,383.16 and 87,206.80 is: 120,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,764.24 : 198,383.16 = 87,206.80 : x
  2. Step 2: Convert to fraction form
    143,764.24/198,383.16 = 87,206.80/x
  3. Step 3: Cross multiply
    143,764.24x = 198,383.16 × 87,206.80
  4. Step 4: Simplify right side
    143,764.24x = 17,300,360,557.49
  5. Step 5: Solve for x
    x = 17,300,360,557.49/143,764.24
  6. Step 6: Final answer
    x = 120,338.41

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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.