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Finding the Fourth Proportional to 115.62, 173.04 and 70.08

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Solution

The fourth proportional to 115.62, 173.04 and 70.08 is: 104.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.62 : 173.04 = 70.08 : x
  2. Step 2: Convert to fraction form
    115.62/173.04 = 70.08/x
  3. Step 3: Cross multiply
    115.62x = 173.04 × 70.08
  4. Step 4: Simplify right side
    115.62x = 12,126.64
  5. Step 5: Solve for x
    x = 12,126.64/115.62
  6. Step 6: Final answer
    x = 104.88

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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.