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Finding the Fourth Proportional to 117,679.74, 162,399.87 and 63,964.88

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Solution

The fourth proportional to 117,679.74, 162,399.87 and 63,964.88 is: 88,272.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,679.74 : 162,399.87 = 63,964.88 : x
  2. Step 2: Convert to fraction form
    117,679.74/162,399.87 = 63,964.88/x
  3. Step 3: Cross multiply
    117,679.74x = 162,399.87 × 63,964.88
  4. Step 4: Simplify right side
    117,679.74x = 10,387,888,346.50
  5. Step 5: Solve for x
    x = 10,387,888,346.50/117,679.74
  6. Step 6: Final answer
    x = 88,272.53

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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.