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Finding the Fourth Proportional to 136,399.68, 188,232.12 and 79,800.12

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Solution

The fourth proportional to 136,399.68, 188,232.12 and 79,800.12 is: 110,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,399.68 : 188,232.12 = 79,800.12 : x
  2. Step 2: Convert to fraction form
    136,399.68/188,232.12 = 79,800.12/x
  3. Step 3: Cross multiply
    136,399.68x = 188,232.12 × 79,800.12
  4. Step 4: Simplify right side
    136,399.68x = 15,020,945,763.85
  5. Step 5: Solve for x
    x = 15,020,945,763.85/136,399.68
  6. Step 6: Final answer
    x = 110,124.49

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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.