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Finding the Fourth Proportional to 117.73, 162.53 and 88.66

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Solution

The fourth proportional to 117.73, 162.53 and 88.66 is: 122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.73 : 162.53 = 88.66 : x
  2. Step 2: Convert to fraction form
    117.73/162.53 = 88.66/x
  3. Step 3: Cross multiply
    117.73x = 162.53 × 88.66
  4. Step 4: Simplify right side
    117.73x = 14,409.91
  5. Step 5: Solve for x
    x = 14,409.91/117.73
  6. Step 6: Final answer
    x = 122.40

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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.