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Finding the Fourth Proportional to 118,608.92, 163,789.18 and 76,241.24

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Solution

The fourth proportional to 118,608.92, 163,789.18 and 76,241.24 is: 105,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,608.92 : 163,789.18 = 76,241.24 : x
  2. Step 2: Convert to fraction form
    118,608.92/163,789.18 = 76,241.24/x
  3. Step 3: Cross multiply
    118,608.92x = 163,789.18 × 76,241.24
  4. Step 4: Simplify right side
    118,608.92x = 12,487,490,181.78
  5. Step 5: Solve for x
    x = 12,487,490,181.78/118,608.92
  6. Step 6: Final answer
    x = 105,282.89

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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.