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Finding the Fourth Proportional to 117,141.44, 161,648.78 and 68,736.87

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Solution

The fourth proportional to 117,141.44, 161,648.78 and 68,736.87 is: 94,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,141.44 : 161,648.78 = 68,736.87 : x
  2. Step 2: Convert to fraction form
    117,141.44/161,648.78 = 68,736.87/x
  3. Step 3: Cross multiply
    117,141.44x = 161,648.78 × 68,736.87
  4. Step 4: Simplify right side
    117,141.44x = 11,111,230,832.83
  5. Step 5: Solve for x
    x = 11,111,230,832.83/117,141.44
  6. Step 6: Final answer
    x = 94,853.12

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1.5x scale

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.