Home / 115,314.43-172,977.79-109,003.57

Finding the Fourth Proportional to 115,314.43, 172,977.79 and 109,003.57

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Solution

The fourth proportional to 115,314.43, 172,977.79 and 109,003.57 is: 163,511.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,314.43 : 172,977.79 = 109,003.57 : x
  2. Step 2: Convert to fraction form
    115,314.43/172,977.79 = 109,003.57/x
  3. Step 3: Cross multiply
    115,314.43x = 172,977.79 × 109,003.57
  4. Step 4: Simplify right side
    115,314.43x = 18,855,195,935.76
  5. Step 5: Solve for x
    x = 18,855,195,935.76/115,314.43
  6. Step 6: Final answer
    x = 163,511.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.