Home / 158,739.30-219,066.54-87,121.92

Finding the Fourth Proportional to 158,739.30, 219,066.54 and 87,121.92

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Solution

The fourth proportional to 158,739.30, 219,066.54 and 87,121.92 is: 120,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,739.30 : 219,066.54 = 87,121.92 : x
  2. Step 2: Convert to fraction form
    158,739.30/219,066.54 = 87,121.92/x
  3. Step 3: Cross multiply
    158,739.30x = 219,066.54 × 87,121.92
  4. Step 4: Simplify right side
    158,739.30x = 19,085,497,572.56
  5. Step 5: Solve for x
    x = 19,085,497,572.56/158,739.30
  6. Step 6: Final answer
    x = 120,231.71

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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.