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Finding the Fourth Proportional to 117,090.21, 161,584.98 and 63,375.21

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Solution

The fourth proportional to 117,090.21, 161,584.98 and 63,375.21 is: 87,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,090.21 : 161,584.98 = 63,375.21 : x
  2. Step 2: Convert to fraction form
    117,090.21/161,584.98 = 63,375.21/x
  3. Step 3: Cross multiply
    117,090.21x = 161,584.98 × 63,375.21
  4. Step 4: Simplify right side
    117,090.21x = 10,240,481,802.69
  5. Step 5: Solve for x
    x = 10,240,481,802.69/117,090.21
  6. Step 6: Final answer
    x = 87,458.05

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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.