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Finding the Fourth Proportional to 95.03, 142.39 and 91.59

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Solution

The fourth proportional to 95.03, 142.39 and 91.59 is: 137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.03 : 142.39 = 91.59 : x
  2. Step 2: Convert to fraction form
    95.03/142.39 = 91.59/x
  3. Step 3: Cross multiply
    95.03x = 142.39 × 91.59
  4. Step 4: Simplify right side
    95.03x = 13,041.08
  5. Step 5: Solve for x
    x = 13,041.08/95.03
  6. Step 6: Final answer
    x = 137.23

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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.