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Finding the Fourth Proportional to 175.58, 242.02 and 123.20

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Solution

The fourth proportional to 175.58, 242.02 and 123.20 is: 169.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.58 : 242.02 = 123.20 : x
  2. Step 2: Convert to fraction form
    175.58/242.02 = 123.20/x
  3. Step 3: Cross multiply
    175.58x = 242.02 × 123.20
  4. Step 4: Simplify right side
    175.58x = 29,816.86
  5. Step 5: Solve for x
    x = 29,816.86/175.58
  6. Step 6: Final answer
    x = 169.82

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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.