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Finding the Fourth Proportional to 117,236.63, 161,786 and 63,521.63

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Solution

The fourth proportional to 117,236.63, 161,786 and 63,521.63 is: 87,659.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,236.63 : 161,786 = 63,521.63 : x
  2. Step 2: Convert to fraction form
    117,236.63/161,786 = 63,521.63/x
  3. Step 3: Cross multiply
    117,236.63x = 161,786 × 63,521.63
  4. Step 4: Simplify right side
    117,236.63x = 10,276,910,431.18
  5. Step 5: Solve for x
    x = 10,276,910,431.18/117,236.63
  6. Step 6: Final answer
    x = 87,659.55

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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.