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Finding the Fourth Proportional to 101,308.17, 151,826.42 and 78,845.97

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Solution

The fourth proportional to 101,308.17, 151,826.42 and 78,845.97 is: 118,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,308.17 : 151,826.42 = 78,845.97 : x
  2. Step 2: Convert to fraction form
    101,308.17/151,826.42 = 78,845.97/x
  3. Step 3: Cross multiply
    101,308.17x = 151,826.42 × 78,845.97
  4. Step 4: Simplify right side
    101,308.17x = 11,970,900,582.73
  5. Step 5: Solve for x
    x = 11,970,900,582.73/101,308.17
  6. Step 6: Final answer
    x = 118,163.24

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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.