Home / 136,217.30-188,072.55-85,250.61

Finding the Fourth Proportional to 136,217.30, 188,072.55 and 85,250.61

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Solution

The fourth proportional to 136,217.30, 188,072.55 and 85,250.61 is: 117,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,217.30 : 188,072.55 = 85,250.61 : x
  2. Step 2: Convert to fraction form
    136,217.30/188,072.55 = 85,250.61/x
  3. Step 3: Cross multiply
    136,217.30x = 188,072.55 × 85,250.61
  4. Step 4: Simplify right side
    136,217.30x = 16,033,299,611.76
  5. Step 5: Solve for x
    x = 16,033,299,611.76/136,217.30
  6. Step 6: Final answer
    x = 117,703.85

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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.