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Finding the Fourth Proportional to 192.13, 265.12 and 129.99

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Solution

The fourth proportional to 192.13, 265.12 and 129.99 is: 179.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.13 : 265.12 = 129.99 : x
  2. Step 2: Convert to fraction form
    192.13/265.12 = 129.99/x
  3. Step 3: Cross multiply
    192.13x = 265.12 × 129.99
  4. Step 4: Simplify right side
    192.13x = 34,462.95
  5. Step 5: Solve for x
    x = 34,462.95/192.13
  6. Step 6: Final answer
    x = 179.37

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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.