Home / 117,631.35-162,341.82-66,656.43

Finding the Fourth Proportional to 117,631.35, 162,341.82 and 66,656.43

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Solution

The fourth proportional to 117,631.35, 162,341.82 and 66,656.43 is: 91,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,631.35 : 162,341.82 = 66,656.43 : x
  2. Step 2: Convert to fraction form
    117,631.35/162,341.82 = 66,656.43/x
  3. Step 3: Cross multiply
    117,631.35x = 162,341.82 × 66,656.43
  4. Step 4: Simplify right side
    117,631.35x = 10,821,126,160.90
  5. Step 5: Solve for x
    x = 10,821,126,160.90/117,631.35
  6. Step 6: Final answer
    x = 91,991.86

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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.