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Finding the Fourth Proportional to 136,471.68, 188,334.72 and 79,885.44

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Solution

The fourth proportional to 136,471.68, 188,334.72 and 79,885.44 is: 110,244.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,471.68 : 188,334.72 = 79,885.44 : x
  2. Step 2: Convert to fraction form
    136,471.68/188,334.72 = 79,885.44/x
  3. Step 3: Cross multiply
    136,471.68x = 188,334.72 × 79,885.44
  4. Step 4: Simplify right side
    136,471.68x = 15,045,201,974.48
  5. Step 5: Solve for x
    x = 15,045,201,974.48/136,471.68
  6. Step 6: Final answer
    x = 110,244.13

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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.