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Finding the Fourth Proportional to 130.38, 180.03 and 101.58

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Solution

The fourth proportional to 130.38, 180.03 and 101.58 is: 140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.38 : 180.03 = 101.58 : x
  2. Step 2: Convert to fraction form
    130.38/180.03 = 101.58/x
  3. Step 3: Cross multiply
    130.38x = 180.03 × 101.58
  4. Step 4: Simplify right side
    130.38x = 18,287.45
  5. Step 5: Solve for x
    x = 18,287.45/130.38
  6. Step 6: Final answer
    x = 140.26

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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.