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Finding the Fourth Proportional to 113.94, 156.60 and 110.70

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Solution

The fourth proportional to 113.94, 156.60 and 110.70 is: 152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.94 : 156.60 = 110.70 : x
  2. Step 2: Convert to fraction form
    113.94/156.60 = 110.70/x
  3. Step 3: Cross multiply
    113.94x = 156.60 × 110.70
  4. Step 4: Simplify right side
    113.94x = 17,335.62
  5. Step 5: Solve for x
    x = 17,335.62/113.94
  6. Step 6: Final answer
    x = 152.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.