Home / 159,452-220,043.76-87,831.80

Finding the Fourth Proportional to 159,452, 220,043.76 and 87,831.80

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Solution

The fourth proportional to 159,452, 220,043.76 and 87,831.80 is: 121,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,452 : 220,043.76 = 87,831.80 : x
  2. Step 2: Convert to fraction form
    159,452/220,043.76 = 87,831.80/x
  3. Step 3: Cross multiply
    159,452x = 220,043.76 × 87,831.80
  4. Step 4: Simplify right side
    159,452x = 19,326,839,519.57
  5. Step 5: Solve for x
    x = 19,326,839,519.57/159,452
  6. Step 6: Final answer
    x = 121,207.88

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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.