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Finding the Fourth Proportional to 123.88, 170.93 and 94.37

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Solution

The fourth proportional to 123.88, 170.93 and 94.37 is: 130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.88 : 170.93 = 94.37 : x
  2. Step 2: Convert to fraction form
    123.88/170.93 = 94.37/x
  3. Step 3: Cross multiply
    123.88x = 170.93 × 94.37
  4. Step 4: Simplify right side
    123.88x = 16,129.34
  5. Step 5: Solve for x
    x = 16,129.34/123.88
  6. Step 6: Final answer
    x = 130.20

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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.