Home / 117,579.87-162,171.30-81,751.95

Finding the Fourth Proportional to 117,579.87, 162,171.30 and 81,751.95

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Solution

The fourth proportional to 117,579.87, 162,171.30 and 81,751.95 is: 112,755.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,579.87 : 162,171.30 = 81,751.95 : x
  2. Step 2: Convert to fraction form
    117,579.87/162,171.30 = 81,751.95/x
  3. Step 3: Cross multiply
    117,579.87x = 162,171.30 × 81,751.95
  4. Step 4: Simplify right side
    117,579.87x = 13,257,820,009.04
  5. Step 5: Solve for x
    x = 13,257,820,009.04/117,579.87
  6. Step 6: Final answer
    x = 112,755.87

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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.