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Finding the Fourth Proportional to 109,313.55, 150,863.43 and 63,988.80

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Solution

The fourth proportional to 109,313.55, 150,863.43 and 63,988.80 is: 88,310.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,313.55 : 150,863.43 = 63,988.80 : x
  2. Step 2: Convert to fraction form
    109,313.55/150,863.43 = 63,988.80/x
  3. Step 3: Cross multiply
    109,313.55x = 150,863.43 × 63,988.80
  4. Step 4: Simplify right side
    109,313.55x = 9,653,569,849.58
  5. Step 5: Solve for x
    x = 9,653,569,849.58/109,313.55
  6. Step 6: Final answer
    x = 88,310.83

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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.