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Finding the Fourth Proportional to 114.03, 171.30 and 87.03

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Solution

The fourth proportional to 114.03, 171.30 and 87.03 is: 130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.03 : 171.30 = 87.03 : x
  2. Step 2: Convert to fraction form
    114.03/171.30 = 87.03/x
  3. Step 3: Cross multiply
    114.03x = 171.30 × 87.03
  4. Step 4: Simplify right side
    114.03x = 14,908.24
  5. Step 5: Solve for x
    x = 14,908.24/114.03
  6. Step 6: Final answer
    x = 130.74

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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.