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Finding the Fourth Proportional to 101,387.60, 151,974.48 and 42,163.64

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Solution

The fourth proportional to 101,387.60, 151,974.48 and 42,163.64 is: 63,201.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,387.60 : 151,974.48 = 42,163.64 : x
  2. Step 2: Convert to fraction form
    101,387.60/151,974.48 = 42,163.64/x
  3. Step 3: Cross multiply
    101,387.60x = 151,974.48 × 42,163.64
  4. Step 4: Simplify right side
    101,387.60x = 6,407,797,263.91
  5. Step 5: Solve for x
    x = 6,407,797,263.91/101,387.60
  6. Step 6: Final answer
    x = 63,201.00

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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.