Home / 101,121.18-151,558.80-71,547.54

Finding the Fourth Proportional to 101,121.18, 151,558.80 and 71,547.54

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Solution

The fourth proportional to 101,121.18, 151,558.80 and 71,547.54 is: 107,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.18 : 151,558.80 = 71,547.54 : x
  2. Step 2: Convert to fraction form
    101,121.18/151,558.80 = 71,547.54/x
  3. Step 3: Cross multiply
    101,121.18x = 151,558.80 × 71,547.54
  4. Step 4: Simplify right side
    101,121.18x = 10,843,659,305.35
  5. Step 5: Solve for x
    x = 10,843,659,305.35/101,121.18
  6. Step 6: Final answer
    x = 107,234.30

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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.