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Finding the Fourth Proportional to 159,576.39, 220,211.52 and 87,954.84

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Solution

The fourth proportional to 159,576.39, 220,211.52 and 87,954.84 is: 121,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,576.39 : 220,211.52 = 87,954.84 : x
  2. Step 2: Convert to fraction form
    159,576.39/220,211.52 = 87,954.84/x
  3. Step 3: Cross multiply
    159,576.39x = 220,211.52 × 87,954.84
  4. Step 4: Simplify right side
    159,576.39x = 19,368,669,007.76
  5. Step 5: Solve for x
    x = 19,368,669,007.76/159,576.39
  6. Step 6: Final answer
    x = 121,375.53

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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.