Home / 115,139.22-172,732.11-48,579.51

Finding the Fourth Proportional to 115,139.22, 172,732.11 and 48,579.51

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Solution

The fourth proportional to 115,139.22, 172,732.11 and 48,579.51 is: 72,879.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,139.22 : 172,732.11 = 48,579.51 : x
  2. Step 2: Convert to fraction form
    115,139.22/172,732.11 = 48,579.51/x
  3. Step 3: Cross multiply
    115,139.22x = 172,732.11 × 48,579.51
  4. Step 4: Simplify right side
    115,139.22x = 8,391,241,265.07
  5. Step 5: Solve for x
    x = 8,391,241,265.07/115,139.22
  6. Step 6: Final answer
    x = 72,879.09

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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.