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Finding the Fourth Proportional to 158.93, 219.30 and 93.43

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Solution

The fourth proportional to 158.93, 219.30 and 93.43 is: 128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.93 : 219.30 = 93.43 : x
  2. Step 2: Convert to fraction form
    158.93/219.30 = 93.43/x
  3. Step 3: Cross multiply
    158.93x = 219.30 × 93.43
  4. Step 4: Simplify right side
    158.93x = 20,488.10
  5. Step 5: Solve for x
    x = 20,488.10/158.93
  6. Step 6: Final answer
    x = 128.92

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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.