Home / 170,067.20-255,105-81,330.08

Finding the Fourth Proportional to 170,067.20, 255,105 and 81,330.08

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Solution

The fourth proportional to 170,067.20, 255,105 and 81,330.08 is: 121,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,067.20 : 255,105 = 81,330.08 : x
  2. Step 2: Convert to fraction form
    170,067.20/255,105 = 81,330.08/x
  3. Step 3: Cross multiply
    170,067.20x = 255,105 × 81,330.08
  4. Step 4: Simplify right side
    170,067.20x = 20,747,710,058.40
  5. Step 5: Solve for x
    x = 20,747,710,058.40/170,067.20
  6. Step 6: Final answer
    x = 121,997.13

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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.