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Finding the Fourth Proportional to 100,614.45, 150,919.83 and 40,641.42

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Solution

The fourth proportional to 100,614.45, 150,919.83 and 40,641.42 is: 60,961.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,614.45 : 150,919.83 = 40,641.42 : x
  2. Step 2: Convert to fraction form
    100,614.45/150,919.83 = 40,641.42/x
  3. Step 3: Cross multiply
    100,614.45x = 150,919.83 × 40,641.42
  4. Step 4: Simplify right side
    100,614.45x = 6,133,596,197.36
  5. Step 5: Solve for x
    x = 6,133,596,197.36/100,614.45
  6. Step 6: Final answer
    x = 60,961.38

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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.