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Finding the Fourth Proportional to 130.66, 180.24 and 106.06

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Solution

The fourth proportional to 130.66, 180.24 and 106.06 is: 146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.66 : 180.24 = 106.06 : x
  2. Step 2: Convert to fraction form
    130.66/180.24 = 106.06/x
  3. Step 3: Cross multiply
    130.66x = 180.24 × 106.06
  4. Step 4: Simplify right side
    130.66x = 19,116.34
  5. Step 5: Solve for x
    x = 19,116.34/130.66
  6. Step 6: Final answer
    x = 146.30

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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.