Home / 100,621.92-150,938.05-25,742.71

Finding the Fourth Proportional to 100,621.92, 150,938.05 and 25,742.71

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Solution

The fourth proportional to 100,621.92, 150,938.05 and 25,742.71 is: 38,615.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621.92 : 150,938.05 = 25,742.71 : x
  2. Step 2: Convert to fraction form
    100,621.92/150,938.05 = 25,742.71/x
  3. Step 3: Cross multiply
    100,621.92x = 150,938.05 × 25,742.71
  4. Step 4: Simplify right side
    100,621.92x = 3,885,554,449.12
  5. Step 5: Solve for x
    x = 3,885,554,449.12/100,621.92
  6. Step 6: Final answer
    x = 38,615.39

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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.