Home / 155,853.60-215,067.16-87,873

Finding the Fourth Proportional to 155,853.60, 215,067.16 and 87,873

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Solution

The fourth proportional to 155,853.60, 215,067.16 and 87,873 is: 121,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,853.60 : 215,067.16 = 87,873 : x
  2. Step 2: Convert to fraction form
    155,853.60/215,067.16 = 87,873/x
  3. Step 3: Cross multiply
    155,853.60x = 215,067.16 × 87,873
  4. Step 4: Simplify right side
    155,853.60x = 18,898,596,550.68
  5. Step 5: Solve for x
    x = 18,898,596,550.68/155,853.60
  6. Step 6: Final answer
    x = 121,258.65

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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.