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Finding the Fourth Proportional to 100,641.49, 150,958.78 and 25,762.28

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Solution

The fourth proportional to 100,641.49, 150,958.78 and 25,762.28 is: 38,642.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,641.49 : 150,958.78 = 25,762.28 : x
  2. Step 2: Convert to fraction form
    100,641.49/150,958.78 = 25,762.28/x
  3. Step 3: Cross multiply
    100,641.49x = 150,958.78 × 25,762.28
  4. Step 4: Simplify right side
    100,641.49x = 3,889,042,883.25
  5. Step 5: Solve for x
    x = 3,889,042,883.25/100,641.49
  6. Step 6: Final answer
    x = 38,642.54

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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.