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Finding the Fourth Proportional to 117,170.50, 161,695.26 and 63,455.56

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Solution

The fourth proportional to 117,170.50, 161,695.26 and 63,455.56 is: 87,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,170.50 : 161,695.26 = 63,455.56 : x
  2. Step 2: Convert to fraction form
    117,170.50/161,695.26 = 63,455.56/x
  3. Step 3: Cross multiply
    117,170.50x = 161,695.26 × 63,455.56
  4. Step 4: Simplify right side
    117,170.50x = 10,260,463,272.65
  5. Step 5: Solve for x
    x = 10,260,463,272.65/117,170.50
  6. Step 6: Final answer
    x = 87,568.66

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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.