Home / 279,637.92-419,398.16-90,115.34

Finding the Fourth Proportional to 279,637.92, 419,398.16 and 90,115.34

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Solution

The fourth proportional to 279,637.92, 419,398.16 and 90,115.34 is: 135,154.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,637.92 : 419,398.16 = 90,115.34 : x
  2. Step 2: Convert to fraction form
    279,637.92/419,398.16 = 90,115.34/x
  3. Step 3: Cross multiply
    279,637.92x = 419,398.16 × 90,115.34
  4. Step 4: Simplify right side
    279,637.92x = 37,794,205,236.21
  5. Step 5: Solve for x
    x = 37,794,205,236.21/279,637.92
  6. Step 6: Final answer
    x = 135,154.08

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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.