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Finding the Fourth Proportional to 113.34, 156.26 and 80.10

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Solution

The fourth proportional to 113.34, 156.26 and 80.10 is: 110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.34 : 156.26 = 80.10 : x
  2. Step 2: Convert to fraction form
    113.34/156.26 = 80.10/x
  3. Step 3: Cross multiply
    113.34x = 156.26 × 80.10
  4. Step 4: Simplify right side
    113.34x = 12,516.43
  5. Step 5: Solve for x
    x = 12,516.43/113.34
  6. Step 6: Final answer
    x = 110.43

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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.