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Finding the Fourth Proportional to 117,120.98, 161,625.02 and 63,405.54

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Solution

The fourth proportional to 117,120.98, 161,625.02 and 63,405.54 is: 87,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,120.98 : 161,625.02 = 63,405.54 : x
  2. Step 2: Convert to fraction form
    117,120.98/161,625.02 = 63,405.54/x
  3. Step 3: Cross multiply
    117,120.98x = 161,625.02 × 63,405.54
  4. Step 4: Simplify right side
    117,120.98x = 10,247,921,353.58
  5. Step 5: Solve for x
    x = 10,247,921,353.58/117,120.98
  6. Step 6: Final answer
    x = 87,498.60

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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.