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Finding the Fourth Proportional to 132.64, 182.88 and 117.16

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Solution

The fourth proportional to 132.64, 182.88 and 117.16 is: 161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.64 : 182.88 = 117.16 : x
  2. Step 2: Convert to fraction form
    132.64/182.88 = 117.16/x
  3. Step 3: Cross multiply
    132.64x = 182.88 × 117.16
  4. Step 4: Simplify right side
    132.64x = 21,426.22
  5. Step 5: Solve for x
    x = 21,426.22/132.64
  6. Step 6: Final answer
    x = 161.54

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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.