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Finding the Fourth Proportional to 100,084.23, 150,126.45 and 40,919.90

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Solution

The fourth proportional to 100,084.23, 150,126.45 and 40,919.90 is: 61,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,084.23 : 150,126.45 = 40,919.90 : x
  2. Step 2: Convert to fraction form
    100,084.23/150,126.45 = 40,919.90/x
  3. Step 3: Cross multiply
    100,084.23x = 150,126.45 × 40,919.90
  4. Step 4: Simplify right side
    100,084.23x = 6,143,159,321.36
  5. Step 5: Solve for x
    x = 6,143,159,321.36/100,084.23
  6. Step 6: Final answer
    x = 61,379.89

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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.