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Finding the Fourth Proportional to 151,364.82, 208,883.49 and 87,739.52

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Solution

The fourth proportional to 151,364.82, 208,883.49 and 87,739.52 is: 121,080.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,364.82 : 208,883.49 = 87,739.52 : x
  2. Step 2: Convert to fraction form
    151,364.82/208,883.49 = 87,739.52/x
  3. Step 3: Cross multiply
    151,364.82x = 208,883.49 × 87,739.52
  4. Step 4: Simplify right side
    151,364.82x = 18,327,336,104.11
  5. Step 5: Solve for x
    x = 18,327,336,104.11/151,364.82
  6. Step 6: Final answer
    x = 121,080.55

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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.