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Finding the Fourth Proportional to 172,113.28, 258,067.84 and 65,505.28

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Solution

The fourth proportional to 172,113.28, 258,067.84 and 65,505.28 is: 98,219.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,113.28 : 258,067.84 = 65,505.28 : x
  2. Step 2: Convert to fraction form
    172,113.28/258,067.84 = 65,505.28/x
  3. Step 3: Cross multiply
    172,113.28x = 258,067.84 × 65,505.28
  4. Step 4: Simplify right side
    172,113.28x = 16,904,806,118.20
  5. Step 5: Solve for x
    x = 16,904,806,118.20/172,113.28
  6. Step 6: Final answer
    x = 98,219.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.