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Finding the Fourth Proportional to 159,596.28, 220,243.56 and 87,974.76

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Solution

The fourth proportional to 159,596.28, 220,243.56 and 87,974.76 is: 121,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.28 : 220,243.56 = 87,974.76 : x
  2. Step 2: Convert to fraction form
    159,596.28/220,243.56 = 87,974.76/x
  3. Step 3: Cross multiply
    159,596.28x = 220,243.56 × 87,974.76
  4. Step 4: Simplify right side
    159,596.28x = 19,375,874,332.55
  5. Step 5: Solve for x
    x = 19,375,874,332.55/159,596.28
  6. Step 6: Final answer
    x = 121,405.55

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1.5x scale

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.