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Finding the Fourth Proportional to 117.13, 161.72 and 95.35

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Solution

The fourth proportional to 117.13, 161.72 and 95.35 is: 131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.13 : 161.72 = 95.35 : x
  2. Step 2: Convert to fraction form
    117.13/161.72 = 95.35/x
  3. Step 3: Cross multiply
    117.13x = 161.72 × 95.35
  4. Step 4: Simplify right side
    117.13x = 15,420.00
  5. Step 5: Solve for x
    x = 15,420.00/117.13
  6. Step 6: Final answer
    x = 131.65

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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.