Home / 154,921.50-213,791.67-87,853.50

Finding the Fourth Proportional to 154,921.50, 213,791.67 and 87,853.50

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Solution

The fourth proportional to 154,921.50, 213,791.67 and 87,853.50 is: 121,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,921.50 : 213,791.67 = 87,853.50 : x
  2. Step 2: Convert to fraction form
    154,921.50/213,791.67 = 87,853.50/x
  3. Step 3: Cross multiply
    154,921.50x = 213,791.67 × 87,853.50
  4. Step 4: Simplify right side
    154,921.50x = 18,782,346,480.35
  5. Step 5: Solve for x
    x = 18,782,346,480.35/154,921.50
  6. Step 6: Final answer
    x = 121,237.83

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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.