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Finding the Fourth Proportional to 118,609.92, 177,914.88 and 71,876.16

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Solution

The fourth proportional to 118,609.92, 177,914.88 and 71,876.16 is: 107,814.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,609.92 : 177,914.88 = 71,876.16 : x
  2. Step 2: Convert to fraction form
    118,609.92/177,914.88 = 71,876.16/x
  3. Step 3: Cross multiply
    118,609.92x = 177,914.88 × 71,876.16
  4. Step 4: Simplify right side
    118,609.92x = 12,787,838,381.26
  5. Step 5: Solve for x
    x = 12,787,838,381.26/118,609.92
  6. Step 6: Final answer
    x = 107,814.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.