Home / 278,107.42-417,201.10-85,996.82

Finding the Fourth Proportional to 278,107.42, 417,201.10 and 85,996.82

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Solution

The fourth proportional to 278,107.42, 417,201.10 and 85,996.82 is: 129,007.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,107.42 : 417,201.10 = 85,996.82 : x
  2. Step 2: Convert to fraction form
    278,107.42/417,201.10 = 85,996.82/x
  3. Step 3: Cross multiply
    278,107.42x = 417,201.10 × 85,996.82
  4. Step 4: Simplify right side
    278,107.42x = 35,877,967,900.50
  5. Step 5: Solve for x
    x = 35,877,967,900.50/278,107.42
  6. Step 6: Final answer
    x = 129,007.59

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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.