Home / 225,931.25-338,660.40-76,119.78

Finding the Fourth Proportional to 225,931.25, 338,660.40 and 76,119.78

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Solution

The fourth proportional to 225,931.25, 338,660.40 and 76,119.78 is: 114,100.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,931.25 : 338,660.40 = 76,119.78 : x
  2. Step 2: Convert to fraction form
    225,931.25/338,660.40 = 76,119.78/x
  3. Step 3: Cross multiply
    225,931.25x = 338,660.40 × 76,119.78
  4. Step 4: Simplify right side
    225,931.25x = 25,778,755,142.71
  5. Step 5: Solve for x
    x = 25,778,755,142.71/225,931.25
  6. Step 6: Final answer
    x = 114,100.00

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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.