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Finding the Fourth Proportional to 151,359.44, 208,876.06 and 87,734.16

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Solution

The fourth proportional to 151,359.44, 208,876.06 and 87,734.16 is: 121,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,359.44 : 208,876.06 = 87,734.16 : x
  2. Step 2: Convert to fraction form
    151,359.44/208,876.06 = 87,734.16/x
  3. Step 3: Cross multiply
    151,359.44x = 208,876.06 × 87,734.16
  4. Step 4: Simplify right side
    151,359.44x = 18,325,565,668.21
  5. Step 5: Solve for x
    x = 18,325,565,668.21/151,359.44
  6. Step 6: Final answer
    x = 121,073.16

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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.