Home / 100,890.28-151,336.62-34,331.76

Finding the Fourth Proportional to 100,890.28, 151,336.62 and 34,331.76

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Solution

The fourth proportional to 100,890.28, 151,336.62 and 34,331.76 is: 51,498.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,890.28 : 151,336.62 = 34,331.76 : x
  2. Step 2: Convert to fraction form
    100,890.28/151,336.62 = 34,331.76/x
  3. Step 3: Cross multiply
    100,890.28x = 151,336.62 × 34,331.76
  4. Step 4: Simplify right side
    100,890.28x = 5,195,652,517.05
  5. Step 5: Solve for x
    x = 5,195,652,517.05/100,890.28
  6. Step 6: Final answer
    x = 51,498.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.