Home / 225,851.28-311,665.41-135,153.69

Finding the Fourth Proportional to 225,851.28, 311,665.41 and 135,153.69

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Solution

The fourth proportional to 225,851.28, 311,665.41 and 135,153.69 is: 186,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,851.28 : 311,665.41 = 135,153.69 : x
  2. Step 2: Convert to fraction form
    225,851.28/311,665.41 = 135,153.69/x
  3. Step 3: Cross multiply
    225,851.28x = 311,665.41 × 135,153.69
  4. Step 4: Simplify right side
    225,851.28x = 42,122,730,206.86
  5. Step 5: Solve for x
    x = 42,122,730,206.86/225,851.28
  6. Step 6: Final answer
    x = 186,506.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.