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Finding the Fourth Proportional to 100,255.90, 150,219.78 and 60,693.10

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Solution

The fourth proportional to 100,255.90, 150,219.78 and 60,693.10 is: 90,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,255.90 : 150,219.78 = 60,693.10 : x
  2. Step 2: Convert to fraction form
    100,255.90/150,219.78 = 60,693.10/x
  3. Step 3: Cross multiply
    100,255.90x = 150,219.78 × 60,693.10
  4. Step 4: Simplify right side
    100,255.90x = 9,117,304,129.52
  5. Step 5: Solve for x
    x = 9,117,304,129.52/100,255.90
  6. Step 6: Final answer
    x = 90,940.33

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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.