Home / 117,579.38-162,170.62-81,751.46

Finding the Fourth Proportional to 117,579.38, 162,170.62 and 81,751.46

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Solution

The fourth proportional to 117,579.38, 162,170.62 and 81,751.46 is: 112,755.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,579.38 : 162,170.62 = 81,751.46 : x
  2. Step 2: Convert to fraction form
    117,579.38/162,170.62 = 81,751.46/x
  3. Step 3: Cross multiply
    117,579.38x = 162,170.62 × 81,751.46
  4. Step 4: Simplify right side
    117,579.38x = 13,257,684,954.11
  5. Step 5: Solve for x
    x = 13,257,684,954.11/117,579.38
  6. Step 6: Final answer
    x = 112,755.19

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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.