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Finding the Fourth Proportional to 117,121.62, 161,627.80 and 63,406.60

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Solution

The fourth proportional to 117,121.62, 161,627.80 and 63,406.60 is: 87,501.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,121.62 : 161,627.80 = 63,406.60 : x
  2. Step 2: Convert to fraction form
    117,121.62/161,627.80 = 63,406.60/x
  3. Step 3: Cross multiply
    117,121.62x = 161,627.80 × 63,406.60
  4. Step 4: Simplify right side
    117,121.62x = 10,248,269,263.48
  5. Step 5: Solve for x
    x = 10,248,269,263.48/117,121.62
  6. Step 6: Final answer
    x = 87,501.09

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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.