Home / 136,196.88-187,892.34-85,120.70

Finding the Fourth Proportional to 136,196.88, 187,892.34 and 85,120.70

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Solution

The fourth proportional to 136,196.88, 187,892.34 and 85,120.70 is: 117,429.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,196.88 : 187,892.34 = 85,120.70 : x
  2. Step 2: Convert to fraction form
    136,196.88/187,892.34 = 85,120.70/x
  3. Step 3: Cross multiply
    136,196.88x = 187,892.34 × 85,120.70
  4. Step 4: Simplify right side
    136,196.88x = 15,993,527,505.44
  5. Step 5: Solve for x
    x = 15,993,527,505.44/136,196.88
  6. Step 6: Final answer
    x = 117,429.47

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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.