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Finding the Fourth Proportional to 113,993.32, 157,310.18 and 63,691.88

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Solution

The fourth proportional to 113,993.32, 157,310.18 and 63,691.88 is: 87,894.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,993.32 : 157,310.18 = 63,691.88 : x
  2. Step 2: Convert to fraction form
    113,993.32/157,310.18 = 63,691.88/x
  3. Step 3: Cross multiply
    113,993.32x = 157,310.18 × 63,691.88
  4. Step 4: Simplify right side
    113,993.32x = 10,019,381,107.34
  5. Step 5: Solve for x
    x = 10,019,381,107.34/113,993.32
  6. Step 6: Final answer
    x = 87,894.46

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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.