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Finding the Fourth Proportional to 128,247.90, 192,375.15 and 60,764.10

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Solution

The fourth proportional to 128,247.90, 192,375.15 and 60,764.10 is: 91,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.90 : 192,375.15 = 60,764.10 : x
  2. Step 2: Convert to fraction form
    128,247.90/192,375.15 = 60,764.10/x
  3. Step 3: Cross multiply
    128,247.90x = 192,375.15 × 60,764.10
  4. Step 4: Simplify right side
    128,247.90x = 11,689,502,852.12
  5. Step 5: Solve for x
    x = 11,689,502,852.12/128,247.90
  6. Step 6: Final answer
    x = 91,147.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.