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Finding the Fourth Proportional to 101,163.15, 139,657.61 and 73,908.63

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Solution

The fourth proportional to 101,163.15, 139,657.61 and 73,908.63 is: 102,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,163.15 : 139,657.61 = 73,908.63 : x
  2. Step 2: Convert to fraction form
    101,163.15/139,657.61 = 73,908.63/x
  3. Step 3: Cross multiply
    101,163.15x = 139,657.61 × 73,908.63
  4. Step 4: Simplify right side
    101,163.15x = 10,321,902,624.17
  5. Step 5: Solve for x
    x = 10,321,902,624.17/101,163.15
  6. Step 6: Final answer
    x = 102,032.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.