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Finding the Fourth Proportional to 130.09, 180.44 and 117.94

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Solution

The fourth proportional to 130.09, 180.44 and 117.94 is: 163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.09 : 180.44 = 117.94 : x
  2. Step 2: Convert to fraction form
    130.09/180.44 = 117.94/x
  3. Step 3: Cross multiply
    130.09x = 180.44 × 117.94
  4. Step 4: Simplify right side
    130.09x = 21,281.09
  5. Step 5: Solve for x
    x = 21,281.09/130.09
  6. Step 6: Final answer
    x = 163.59

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.