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Finding the Fourth Proportional to 101,157.20, 151,908.60 and 54,501.20

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Solution

The fourth proportional to 101,157.20, 151,908.60 and 54,501.20 is: 81,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,157.20 : 151,908.60 = 54,501.20 : x
  2. Step 2: Convert to fraction form
    101,157.20/151,908.60 = 54,501.20/x
  3. Step 3: Cross multiply
    101,157.20x = 151,908.60 × 54,501.20
  4. Step 4: Simplify right side
    101,157.20x = 8,279,200,990.32
  5. Step 5: Solve for x
    x = 8,279,200,990.32/101,157.20
  6. Step 6: Final answer
    x = 81,844.90

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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.