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Finding the Fourth Proportional to 117,062.50, 161,494.77 and 68,639.71

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Solution

The fourth proportional to 117,062.50, 161,494.77 and 68,639.71 is: 94,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,062.50 : 161,494.77 = 68,639.71 : x
  2. Step 2: Convert to fraction form
    117,062.50/161,494.77 = 68,639.71/x
  3. Step 3: Cross multiply
    117,062.50x = 161,494.77 × 68,639.71
  4. Step 4: Simplify right side
    117,062.50x = 11,084,954,179.32
  5. Step 5: Solve for x
    x = 11,084,954,179.32/117,062.50
  6. Step 6: Final answer
    x = 94,692.61

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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.