Home / 278,121.48-416,997.90-100,605.12

Finding the Fourth Proportional to 278,121.48, 416,997.90 and 100,605.12

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Solution

The fourth proportional to 278,121.48, 416,997.90 and 100,605.12 is: 150,841.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,121.48 : 416,997.90 = 100,605.12 : x
  2. Step 2: Convert to fraction form
    278,121.48/416,997.90 = 100,605.12/x
  3. Step 3: Cross multiply
    278,121.48x = 416,997.90 × 100,605.12
  4. Step 4: Simplify right side
    278,121.48x = 41,952,123,769.25
  5. Step 5: Solve for x
    x = 41,952,123,769.25/278,121.48
  6. Step 6: Final answer
    x = 150,841.01

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1.5x scale

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.