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Finding the Fourth Proportional to 225,986.34, 311,860.29 and 124,013.49

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Solution

The fourth proportional to 225,986.34, 311,860.29 and 124,013.49 is: 171,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,986.34 : 311,860.29 = 124,013.49 : x
  2. Step 2: Convert to fraction form
    225,986.34/311,860.29 = 124,013.49/x
  3. Step 3: Cross multiply
    225,986.34x = 311,860.29 × 124,013.49
  4. Step 4: Simplify right side
    225,986.34x = 38,674,882,955.31
  5. Step 5: Solve for x
    x = 38,674,882,955.31/225,986.34
  6. Step 6: Final answer
    x = 171,138.14

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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.