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Finding the Fourth Proportional to 117,116.64, 161,620.92 and 63,401.61

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Solution

The fourth proportional to 117,116.64, 161,620.92 and 63,401.61 is: 87,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,116.64 : 161,620.92 = 63,401.61 : x
  2. Step 2: Convert to fraction form
    117,116.64/161,620.92 = 63,401.61/x
  3. Step 3: Cross multiply
    117,116.64x = 161,620.92 × 63,401.61
  4. Step 4: Simplify right side
    117,116.64x = 10,247,026,537.68
  5. Step 5: Solve for x
    x = 10,247,026,537.68/117,116.64
  6. Step 6: Final answer
    x = 87,494.20

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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.