Home / 115.14-172.79-50.18

Finding the Fourth Proportional to 115.14, 172.79 and 50.18

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Solution

The fourth proportional to 115.14, 172.79 and 50.18 is: 75.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.14 : 172.79 = 50.18 : x
  2. Step 2: Convert to fraction form
    115.14/172.79 = 50.18/x
  3. Step 3: Cross multiply
    115.14x = 172.79 × 50.18
  4. Step 4: Simplify right side
    115.14x = 8,669.49
  5. Step 5: Solve for x
    x = 8,669.49/115.14
  6. Step 6: Final answer
    x = 75.30

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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.