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Finding the Fourth Proportional to 118,246.31, 163,183.70 and 67,257.72

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Solution

The fourth proportional to 118,246.31, 163,183.70 and 67,257.72 is: 92,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,246.31 : 163,183.70 = 67,257.72 : x
  2. Step 2: Convert to fraction form
    118,246.31/163,183.70 = 67,257.72/x
  3. Step 3: Cross multiply
    118,246.31x = 163,183.70 × 67,257.72
  4. Step 4: Simplify right side
    118,246.31x = 10,975,363,266.88
  5. Step 5: Solve for x
    x = 10,975,363,266.88/118,246.31
  6. Step 6: Final answer
    x = 92,817.81

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1.5x scale

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.