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Finding the Fourth Proportional to 123.16, 184.52 and 77.48

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Solution

The fourth proportional to 123.16, 184.52 and 77.48 is: 116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.16 : 184.52 = 77.48 : x
  2. Step 2: Convert to fraction form
    123.16/184.52 = 77.48/x
  3. Step 3: Cross multiply
    123.16x = 184.52 × 77.48
  4. Step 4: Simplify right side
    123.16x = 14,296.61
  5. Step 5: Solve for x
    x = 14,296.61/123.16
  6. Step 6: Final answer
    x = 116.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.