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Finding the Fourth Proportional to 145,552.56, 200,863.36 and 81,891.44

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Solution

The fourth proportional to 145,552.56, 200,863.36 and 81,891.44 is: 113,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,552.56 : 200,863.36 = 81,891.44 : x
  2. Step 2: Convert to fraction form
    145,552.56/200,863.36 = 81,891.44/x
  3. Step 3: Cross multiply
    145,552.56x = 200,863.36 × 81,891.44
  4. Step 4: Simplify right side
    145,552.56x = 16,448,989,793.64
  5. Step 5: Solve for x
    x = 16,448,989,793.64/145,552.56
  6. Step 6: Final answer
    x = 113,010.65

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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.