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Finding the Fourth Proportional to 117,133.56, 161,644.40 and 63,418.60

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Solution

The fourth proportional to 117,133.56, 161,644.40 and 63,418.60 is: 87,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,133.56 : 161,644.40 = 63,418.60 : x
  2. Step 2: Convert to fraction form
    117,133.56/161,644.40 = 63,418.60/x
  3. Step 3: Cross multiply
    117,133.56x = 161,644.40 × 63,418.60
  4. Step 4: Simplify right side
    117,133.56x = 10,251,261,545.84
  5. Step 5: Solve for x
    x = 10,251,261,545.84/117,133.56
  6. Step 6: Final answer
    x = 87,517.72

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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.