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Finding the Fourth Proportional to 136,861.08, 188,827.02 and 79,489.34

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Solution

The fourth proportional to 136,861.08, 188,827.02 and 79,489.34 is: 109,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,861.08 : 188,827.02 = 79,489.34 : x
  2. Step 2: Convert to fraction form
    136,861.08/188,827.02 = 79,489.34/x
  3. Step 3: Cross multiply
    136,861.08x = 188,827.02 × 79,489.34
  4. Step 4: Simplify right side
    136,861.08x = 15,009,735,193.97
  5. Step 5: Solve for x
    x = 15,009,735,193.97/136,861.08
  6. Step 6: Final answer
    x = 109,671.32

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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.