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Finding the Fourth Proportional to 130.01, 179.03 and 111.56

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Solution

The fourth proportional to 130.01, 179.03 and 111.56 is: 153.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.01 : 179.03 = 111.56 : x
  2. Step 2: Convert to fraction form
    130.01/179.03 = 111.56/x
  3. Step 3: Cross multiply
    130.01x = 179.03 × 111.56
  4. Step 4: Simplify right side
    130.01x = 19,972.03
  5. Step 5: Solve for x
    x = 19,972.03/130.01
  6. Step 6: Final answer
    x = 153.62

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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.