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Finding the Fourth Proportional to 117,201.82, 161,739.29 and 63,486.84

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Solution

The fourth proportional to 117,201.82, 161,739.29 and 63,486.84 is: 87,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,201.82 : 161,739.29 = 63,486.84 : x
  2. Step 2: Convert to fraction form
    117,201.82/161,739.29 = 63,486.84/x
  3. Step 3: Cross multiply
    117,201.82x = 161,739.29 × 63,486.84
  4. Step 4: Simplify right side
    117,201.82x = 10,268,316,281.40
  5. Step 5: Solve for x
    x = 10,268,316,281.40/117,201.82
  6. Step 6: Final answer
    x = 87,612.26

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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.