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Finding the Fourth Proportional to 117,207.05, 161,745.08 and 63,493.11

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Solution

The fourth proportional to 117,207.05, 161,745.08 and 63,493.11 is: 87,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,207.05 : 161,745.08 = 63,493.11 : x
  2. Step 2: Convert to fraction form
    117,207.05/161,745.08 = 63,493.11/x
  3. Step 3: Cross multiply
    117,207.05x = 161,745.08 × 63,493.11
  4. Step 4: Simplify right side
    117,207.05x = 10,269,697,838.93
  5. Step 5: Solve for x
    x = 10,269,697,838.93/117,207.05
  6. Step 6: Final answer
    x = 87,620.14

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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.