Home / 185,709.51-278,606.18-67,380.66

Finding the Fourth Proportional to 185,709.51, 278,606.18 and 67,380.66

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Solution

The fourth proportional to 185,709.51, 278,606.18 and 67,380.66 is: 101,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,709.51 : 278,606.18 = 67,380.66 : x
  2. Step 2: Convert to fraction form
    185,709.51/278,606.18 = 67,380.66/x
  3. Step 3: Cross multiply
    185,709.51x = 278,606.18 × 67,380.66
  4. Step 4: Simplify right side
    185,709.51x = 18,772,668,456.93
  5. Step 5: Solve for x
    x = 18,772,668,456.93/185,709.51
  6. Step 6: Final answer
    x = 101,086.20

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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.