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Finding the Fourth Proportional to 117,655.68, 162,365.87 and 63,940.69

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Solution

The fourth proportional to 117,655.68, 162,365.87 and 63,940.69 is: 88,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,655.68 : 162,365.87 = 63,940.69 : x
  2. Step 2: Convert to fraction form
    117,655.68/162,365.87 = 63,940.69/x
  3. Step 3: Cross multiply
    117,655.68x = 162,365.87 × 63,940.69
  4. Step 4: Simplify right side
    117,655.68x = 10,381,785,760.25
  5. Step 5: Solve for x
    x = 10,381,785,760.25/117,655.68
  6. Step 6: Final answer
    x = 88,238.71

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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.