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Finding the Fourth Proportional to 100,019.67, 150,029.69 and 40,855.35

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Solution

The fourth proportional to 100,019.67, 150,029.69 and 40,855.35 is: 61,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,019.67 : 150,029.69 = 40,855.35 : x
  2. Step 2: Convert to fraction form
    100,019.67/150,029.69 = 40,855.35/x
  3. Step 3: Cross multiply
    100,019.67x = 150,029.69 × 40,855.35
  4. Step 4: Simplify right side
    100,019.67x = 6,129,515,291.06
  5. Step 5: Solve for x
    x = 6,129,515,291.06/100,019.67
  6. Step 6: Final answer
    x = 61,283.10

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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.