Home / 205,025.72-307,560.38-86,709.02

Finding the Fourth Proportional to 205,025.72, 307,560.38 and 86,709.02

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Solution

The fourth proportional to 205,025.72, 307,560.38 and 86,709.02 is: 130,072.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,025.72 : 307,560.38 = 86,709.02 : x
  2. Step 2: Convert to fraction form
    205,025.72/307,560.38 = 86,709.02/x
  3. Step 3: Cross multiply
    205,025.72x = 307,560.38 × 86,709.02
  4. Step 4: Simplify right side
    205,025.72x = 26,668,257,169.28
  5. Step 5: Solve for x
    x = 26,668,257,169.28/205,025.72
  6. Step 6: Final answer
    x = 130,072.74

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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.