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Finding the Fourth Proportional to 117.07, 161.46 and 73.33

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Solution

The fourth proportional to 117.07, 161.46 and 73.33 is: 101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.07 : 161.46 = 73.33 : x
  2. Step 2: Convert to fraction form
    117.07/161.46 = 73.33/x
  3. Step 3: Cross multiply
    117.07x = 161.46 × 73.33
  4. Step 4: Simplify right side
    117.07x = 11,839.86
  5. Step 5: Solve for x
    x = 11,839.86/117.07
  6. Step 6: Final answer
    x = 101.13

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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.