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Finding the Fourth Proportional to 134.76, 186.14 and 111.54

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Solution

The fourth proportional to 134.76, 186.14 and 111.54 is: 154.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.76 : 186.14 = 111.54 : x
  2. Step 2: Convert to fraction form
    134.76/186.14 = 111.54/x
  3. Step 3: Cross multiply
    134.76x = 186.14 × 111.54
  4. Step 4: Simplify right side
    134.76x = 20,762.33
  5. Step 5: Solve for x
    x = 20,762.33/134.76
  6. Step 6: Final answer
    x = 154.07

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Find fourth proportional to 67.38, 93.07 and 55.77
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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.