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Finding the Fourth Proportional to 100,170.78, 150,256.17 and 40,993.26

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Solution

The fourth proportional to 100,170.78, 150,256.17 and 40,993.26 is: 61,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,170.78 : 150,256.17 = 40,993.26 : x
  2. Step 2: Convert to fraction form
    100,170.78/150,256.17 = 40,993.26/x
  3. Step 3: Cross multiply
    100,170.78x = 150,256.17 × 40,993.26
  4. Step 4: Simplify right side
    100,170.78x = 6,159,490,243.41
  5. Step 5: Solve for x
    x = 6,159,490,243.41/100,170.78
  6. Step 6: Final answer
    x = 61,489.89

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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.