Home / 117,181.45-161,700.71-68,778.18

Finding the Fourth Proportional to 117,181.45, 161,700.71 and 68,778.18

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Solution

The fourth proportional to 117,181.45, 161,700.71 and 68,778.18 is: 94,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,181.45 : 161,700.71 = 68,778.18 : x
  2. Step 2: Convert to fraction form
    117,181.45/161,700.71 = 68,778.18/x
  3. Step 3: Cross multiply
    117,181.45x = 161,700.71 × 68,778.18
  4. Step 4: Simplify right side
    117,181.45x = 11,121,480,194.62
  5. Step 5: Solve for x
    x = 11,121,480,194.62/117,181.45
  6. Step 6: Final answer
    x = 94,908.20

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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.