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Finding the Fourth Proportional to 151,359.63, 208,876.34 and 87,734.33

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Solution

The fourth proportional to 151,359.63, 208,876.34 and 87,734.33 is: 121,073.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,359.63 : 208,876.34 = 87,734.33 : x
  2. Step 2: Convert to fraction form
    151,359.63/208,876.34 = 87,734.33/x
  3. Step 3: Cross multiply
    151,359.63x = 208,876.34 × 87,734.33
  4. Step 4: Simplify right side
    151,359.63x = 18,325,625,304.08
  5. Step 5: Solve for x
    x = 18,325,625,304.08/151,359.63
  6. Step 6: Final answer
    x = 121,073.41

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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.