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Finding the Fourth Proportional to 100,116.78, 150,191.58 and 40,936.56

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Solution

The fourth proportional to 100,116.78, 150,191.58 and 40,936.56 is: 61,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,116.78 : 150,191.58 = 40,936.56 : x
  2. Step 2: Convert to fraction form
    100,116.78/150,191.58 = 40,936.56/x
  3. Step 3: Cross multiply
    100,116.78x = 150,191.58 × 40,936.56
  4. Step 4: Simplify right side
    100,116.78x = 6,148,326,626.16
  5. Step 5: Solve for x
    x = 6,148,326,626.16/100,116.78
  6. Step 6: Final answer
    x = 61,411.55

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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.