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Finding the Fourth Proportional to 136,348.92, 188,100.78 and 79,735.32

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Solution

The fourth proportional to 136,348.92, 188,100.78 and 79,735.32 is: 109,999.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,348.92 : 188,100.78 = 79,735.32 : x
  2. Step 2: Convert to fraction form
    136,348.92/188,100.78 = 79,735.32/x
  3. Step 3: Cross multiply
    136,348.92x = 188,100.78 × 79,735.32
  4. Step 4: Simplify right side
    136,348.92x = 14,998,275,885.55
  5. Step 5: Solve for x
    x = 14,998,275,885.55/136,348.92
  6. Step 6: Final answer
    x = 109,999.23

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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.