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Finding the Fourth Proportional to 111.02, 152.87 and 93.56

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Solution

The fourth proportional to 111.02, 152.87 and 93.56 is: 128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.02 : 152.87 = 93.56 : x
  2. Step 2: Convert to fraction form
    111.02/152.87 = 93.56/x
  3. Step 3: Cross multiply
    111.02x = 152.87 × 93.56
  4. Step 4: Simplify right side
    111.02x = 14,301.29
  5. Step 5: Solve for x
    x = 14,301.29/111.02
  6. Step 6: Final answer
    x = 128.82

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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.