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Finding the Fourth Proportional to 123.02, 184.62 and 50.90

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Solution

The fourth proportional to 123.02, 184.62 and 50.90 is: 76.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.02 : 184.62 = 50.90 : x
  2. Step 2: Convert to fraction form
    123.02/184.62 = 50.90/x
  3. Step 3: Cross multiply
    123.02x = 184.62 × 50.90
  4. Step 4: Simplify right side
    123.02x = 9,397.16
  5. Step 5: Solve for x
    x = 9,397.16/123.02
  6. Step 6: Final answer
    x = 76.39

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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.