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Finding the Fourth Proportional to 99,512.66, 137,321.25 and 54,800.66

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Solution

The fourth proportional to 99,512.66, 137,321.25 and 54,800.66 is: 75,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,512.66 : 137,321.25 = 54,800.66 : x
  2. Step 2: Convert to fraction form
    99,512.66/137,321.25 = 54,800.66/x
  3. Step 3: Cross multiply
    99,512.66x = 137,321.25 × 54,800.66
  4. Step 4: Simplify right side
    99,512.66x = 7,525,295,132.03
  5. Step 5: Solve for x
    x = 7,525,295,132.03/99,512.66
  6. Step 6: Final answer
    x = 75,621.49

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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.