Home / 225,427.50-311,087.72-122,061.20

Finding the Fourth Proportional to 225,427.50, 311,087.72 and 122,061.20

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Solution

The fourth proportional to 225,427.50, 311,087.72 and 122,061.20 is: 168,443.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,427.50 : 311,087.72 = 122,061.20 : x
  2. Step 2: Convert to fraction form
    225,427.50/311,087.72 = 122,061.20/x
  3. Step 3: Cross multiply
    225,427.50x = 311,087.72 × 122,061.20
  4. Step 4: Simplify right side
    225,427.50x = 37,971,740,408.46
  5. Step 5: Solve for x
    x = 37,971,740,408.46/225,427.50
  6. Step 6: Final answer
    x = 168,443.25

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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.