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Finding the Fourth Proportional to 117.32, 161.69 and 95.45

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Solution

The fourth proportional to 117.32, 161.69 and 95.45 is: 131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.32 : 161.69 = 95.45 : x
  2. Step 2: Convert to fraction form
    117.32/161.69 = 95.45/x
  3. Step 3: Cross multiply
    117.32x = 161.69 × 95.45
  4. Step 4: Simplify right side
    117.32x = 15,432.02
  5. Step 5: Solve for x
    x = 15,432.02/117.32
  6. Step 6: Final answer
    x = 131.54

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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.