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Finding the Fourth Proportional to 117,102.85, 161,601.89 and 63,388.31

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Solution

The fourth proportional to 117,102.85, 161,601.89 and 63,388.31 is: 87,475.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,102.85 : 161,601.89 = 63,388.31 : x
  2. Step 2: Convert to fraction form
    117,102.85/161,601.89 = 63,388.31/x
  3. Step 3: Cross multiply
    117,102.85x = 161,601.89 × 63,388.31
  4. Step 4: Simplify right side
    117,102.85x = 10,243,669,574.95
  5. Step 5: Solve for x
    x = 10,243,669,574.95/117,102.85
  6. Step 6: Final answer
    x = 87,475.84

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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.