Home / 201,728.88-278,292.34-130,131.97

Finding the Fourth Proportional to 201,728.88, 278,292.34 and 130,131.97

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Solution

The fourth proportional to 201,728.88, 278,292.34 and 130,131.97 is: 179,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,728.88 : 278,292.34 = 130,131.97 : x
  2. Step 2: Convert to fraction form
    201,728.88/278,292.34 = 130,131.97/x
  3. Step 3: Cross multiply
    201,728.88x = 278,292.34 × 130,131.97
  4. Step 4: Simplify right side
    201,728.88x = 36,214,730,440.11
  5. Step 5: Solve for x
    x = 36,214,730,440.11/201,728.88
  6. Step 6: Final answer
    x = 179,521.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.