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Finding the Fourth Proportional to 124.88, 186.19 and 117.99

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Solution

The fourth proportional to 124.88, 186.19 and 117.99 is: 175.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.88 : 186.19 = 117.99 : x
  2. Step 2: Convert to fraction form
    124.88/186.19 = 117.99/x
  3. Step 3: Cross multiply
    124.88x = 186.19 × 117.99
  4. Step 4: Simplify right side
    124.88x = 21,968.26
  5. Step 5: Solve for x
    x = 21,968.26/124.88
  6. Step 6: Final answer
    x = 175.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.