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Finding the Fourth Proportional to 127.95, 192.15 and 117.24

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Solution

The fourth proportional to 127.95, 192.15 and 117.24 is: 176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.95 : 192.15 = 117.24 : x
  2. Step 2: Convert to fraction form
    127.95/192.15 = 117.24/x
  3. Step 3: Cross multiply
    127.95x = 192.15 × 117.24
  4. Step 4: Simplify right side
    127.95x = 22,527.67
  5. Step 5: Solve for x
    x = 22,527.67/127.95
  6. Step 6: Final answer
    x = 176.07

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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.