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Finding the Fourth Proportional to 131.26, 180.70 and 114.02

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Solution

The fourth proportional to 131.26, 180.70 and 114.02 is: 156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.26 : 180.70 = 114.02 : x
  2. Step 2: Convert to fraction form
    131.26/180.70 = 114.02/x
  3. Step 3: Cross multiply
    131.26x = 180.70 × 114.02
  4. Step 4: Simplify right side
    131.26x = 20,603.41
  5. Step 5: Solve for x
    x = 20,603.41/131.26
  6. Step 6: Final answer
    x = 156.97

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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.