Home / 115,139.22-172,732.12-48,579.52

Finding the Fourth Proportional to 115,139.22, 172,732.12 and 48,579.52

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Solution

The fourth proportional to 115,139.22, 172,732.12 and 48,579.52 is: 72,879.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,139.22 : 172,732.12 = 48,579.52 : x
  2. Step 2: Convert to fraction form
    115,139.22/172,732.12 = 48,579.52/x
  3. Step 3: Cross multiply
    115,139.22x = 172,732.12 × 48,579.52
  4. Step 4: Simplify right side
    115,139.22x = 8,391,243,478.18
  5. Step 5: Solve for x
    x = 8,391,243,478.18/115,139.22
  6. Step 6: Final answer
    x = 72,879.11

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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.