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Finding the Fourth Proportional to 136,950.76, 188,993.30 and 80,363.08

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Solution

The fourth proportional to 136,950.76, 188,993.30 and 80,363.08 is: 110,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,950.76 : 188,993.30 = 80,363.08 : x
  2. Step 2: Convert to fraction form
    136,950.76/188,993.30 = 80,363.08/x
  3. Step 3: Cross multiply
    136,950.76x = 188,993.30 × 80,363.08
  4. Step 4: Simplify right side
    136,950.76x = 15,188,083,687.36
  5. Step 5: Solve for x
    x = 15,188,083,687.36/136,950.76
  6. Step 6: Final answer
    x = 110,901.78

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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.