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Finding the Fourth Proportional to 136,769.21, 188,841.50 and 88,399.76

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Solution

The fourth proportional to 136,769.21, 188,841.50 and 88,399.76 is: 122,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,769.21 : 188,841.50 = 88,399.76 : x
  2. Step 2: Convert to fraction form
    136,769.21/188,841.50 = 88,399.76/x
  3. Step 3: Cross multiply
    136,769.21x = 188,841.50 × 88,399.76
  4. Step 4: Simplify right side
    136,769.21x = 16,693,543,278.04
  5. Step 5: Solve for x
    x = 16,693,543,278.04/136,769.21
  6. Step 6: Final answer
    x = 122,056.30

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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.