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Finding the Fourth Proportional to 113,736, 156,955.68 and 63,435

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Solution

The fourth proportional to 113,736, 156,955.68 and 63,435 is: 87,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,736 : 156,955.68 = 63,435 : x
  2. Step 2: Convert to fraction form
    113,736/156,955.68 = 63,435/x
  3. Step 3: Cross multiply
    113,736x = 156,955.68 × 63,435
  4. Step 4: Simplify right side
    113,736x = 9,956,483,560.80
  5. Step 5: Solve for x
    x = 9,956,483,560.80/113,736
  6. Step 6: Final answer
    x = 87,540.30

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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.