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Finding the Fourth Proportional to 117,203.70, 161,741.88 and 63,488.72

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Solution

The fourth proportional to 117,203.70, 161,741.88 and 63,488.72 is: 87,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,203.70 : 161,741.88 = 63,488.72 : x
  2. Step 2: Convert to fraction form
    117,203.70/161,741.88 = 63,488.72/x
  3. Step 3: Cross multiply
    117,203.70x = 161,741.88 × 63,488.72
  4. Step 4: Simplify right side
    117,203.70x = 10,268,784,122.88
  5. Step 5: Solve for x
    x = 10,268,784,122.88/117,203.70
  6. Step 6: Final answer
    x = 87,614.85

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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.