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Finding the Fourth Proportional to 111.09, 152.93 and 92.63

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Solution

The fourth proportional to 111.09, 152.93 and 92.63 is: 127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.09 : 152.93 = 92.63 : x
  2. Step 2: Convert to fraction form
    111.09/152.93 = 92.63/x
  3. Step 3: Cross multiply
    111.09x = 152.93 × 92.63
  4. Step 4: Simplify right side
    111.09x = 14,166.52
  5. Step 5: Solve for x
    x = 14,166.52/111.09
  6. Step 6: Final answer
    x = 127.52

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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.