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Finding the Fourth Proportional to 101,129.20, 151,570.80 and 71,555.56

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Solution

The fourth proportional to 101,129.20, 151,570.80 and 71,555.56 is: 107,246.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,129.20 : 151,570.80 = 71,555.56 : x
  2. Step 2: Convert to fraction form
    101,129.20/151,570.80 = 71,555.56/x
  3. Step 3: Cross multiply
    101,129.20x = 151,570.80 × 71,555.56
  4. Step 4: Simplify right side
    101,129.20x = 10,845,733,473.65
  5. Step 5: Solve for x
    x = 10,845,733,473.65/101,129.20
  6. Step 6: Final answer
    x = 107,246.31

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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.