Home / 217,375.32-299,974.14-121,881.72

Finding the Fourth Proportional to 217,375.32, 299,974.14 and 121,881.72

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Solution

The fourth proportional to 217,375.32, 299,974.14 and 121,881.72 is: 168,194.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,375.32 : 299,974.14 = 121,881.72 : x
  2. Step 2: Convert to fraction form
    217,375.32/299,974.14 = 121,881.72/x
  3. Step 3: Cross multiply
    217,375.32x = 299,974.14 × 121,881.72
  4. Step 4: Simplify right side
    217,375.32x = 36,561,364,138.72
  5. Step 5: Solve for x
    x = 36,561,364,138.72/217,375.32
  6. Step 6: Final answer
    x = 168,194.64

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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.