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Finding the Fourth Proportional to 101,108.80, 151,760.40 and 51,245.20

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Solution

The fourth proportional to 101,108.80, 151,760.40 and 51,245.20 is: 76,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,108.80 : 151,760.40 = 51,245.20 : x
  2. Step 2: Convert to fraction form
    101,108.80/151,760.40 = 51,245.20/x
  3. Step 3: Cross multiply
    101,108.80x = 151,760.40 × 51,245.20
  4. Step 4: Simplify right side
    101,108.80x = 7,776,992,050.08
  5. Step 5: Solve for x
    x = 7,776,992,050.08/101,108.80
  6. Step 6: Final answer
    x = 76,917.06

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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.