Home / 117,145.63-161,654.55-68,741.05

Finding the Fourth Proportional to 117,145.63, 161,654.55 and 68,741.05

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Solution

The fourth proportional to 117,145.63, 161,654.55 and 68,741.05 is: 94,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.63 : 161,654.55 = 68,741.05 : x
  2. Step 2: Convert to fraction form
    117,145.63/161,654.55 = 68,741.05/x
  3. Step 3: Cross multiply
    117,145.63x = 161,654.55 × 68,741.05
  4. Step 4: Simplify right side
    117,145.63x = 11,112,303,504.28
  5. Step 5: Solve for x
    x = 11,112,303,504.28/117,145.63
  6. Step 6: Final answer
    x = 94,858.88

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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.