Home / 117,115.61-161,618.20-63,399.45

Finding the Fourth Proportional to 117,115.61, 161,618.20 and 63,399.45

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Solution

The fourth proportional to 117,115.61, 161,618.20 and 63,399.45 is: 87,490.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,115.61 : 161,618.20 = 63,399.45 : x
  2. Step 2: Convert to fraction form
    117,115.61/161,618.20 = 63,399.45/x
  3. Step 3: Cross multiply
    117,115.61x = 161,618.20 × 63,399.45
  4. Step 4: Simplify right side
    117,115.61x = 10,246,504,989.99
  5. Step 5: Solve for x
    x = 10,246,504,989.99/117,115.61
  6. Step 6: Final answer
    x = 87,490.51

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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.