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Finding the Fourth Proportional to 151,643.88, 209,310.12 and 88,002

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Solution

The fourth proportional to 151,643.88, 209,310.12 and 88,002 is: 121,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,643.88 : 209,310.12 = 88,002 : x
  2. Step 2: Convert to fraction form
    151,643.88/209,310.12 = 88,002/x
  3. Step 3: Cross multiply
    151,643.88x = 209,310.12 × 88,002
  4. Step 4: Simplify right side
    151,643.88x = 18,419,709,180.24
  5. Step 5: Solve for x
    x = 18,419,709,180.24/151,643.88
  6. Step 6: Final answer
    x = 121,466.88

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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.