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Finding the Fourth Proportional to 101,062.40, 151,921.65 and 71,683.70

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Solution

The fourth proportional to 101,062.40, 151,921.65 and 71,683.70 is: 107,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,062.40 : 151,921.65 = 71,683.70 : x
  2. Step 2: Convert to fraction form
    101,062.40/151,921.65 = 71,683.70/x
  3. Step 3: Cross multiply
    101,062.40x = 151,921.65 × 71,683.70
  4. Step 4: Simplify right side
    101,062.40x = 10,890,305,982.11
  5. Step 5: Solve for x
    x = 10,890,305,982.11/101,062.40
  6. Step 6: Final answer
    x = 107,758.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.