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Finding the Fourth Proportional to 100,633.12, 150,734.76 and 76,674.40

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Solution

The fourth proportional to 100,633.12, 150,734.76 and 76,674.40 is: 114,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,633.12 : 150,734.76 = 76,674.40 : x
  2. Step 2: Convert to fraction form
    100,633.12/150,734.76 = 76,674.40/x
  3. Step 3: Cross multiply
    100,633.12x = 150,734.76 × 76,674.40
  4. Step 4: Simplify right side
    100,633.12x = 11,557,497,282.14
  5. Step 5: Solve for x
    x = 11,557,497,282.14/100,633.12
  6. Step 6: Final answer
    x = 114,847.85

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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.