Home / 185,551.20-278,108.10-138,749.40

Finding the Fourth Proportional to 185,551.20, 278,108.10 and 138,749.40

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Solution

The fourth proportional to 185,551.20, 278,108.10 and 138,749.40 is: 207,960.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,551.20 : 278,108.10 = 138,749.40 : x
  2. Step 2: Convert to fraction form
    185,551.20/278,108.10 = 138,749.40/x
  3. Step 3: Cross multiply
    185,551.20x = 278,108.10 × 138,749.40
  4. Step 4: Simplify right side
    185,551.20x = 38,587,332,010.14
  5. Step 5: Solve for x
    x = 38,587,332,010.14/185,551.20
  6. Step 6: Final answer
    x = 207,960.56

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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.