Home / 205,057.10-307,617.33-86,729.10

Finding the Fourth Proportional to 205,057.10, 307,617.33 and 86,729.10

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Solution

The fourth proportional to 205,057.10, 307,617.33 and 86,729.10 is: 130,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,057.10 : 307,617.33 = 86,729.10 : x
  2. Step 2: Convert to fraction form
    205,057.10/307,617.33 = 86,729.10/x
  3. Step 3: Cross multiply
    205,057.10x = 307,617.33 × 86,729.10
  4. Step 4: Simplify right side
    205,057.10x = 26,679,374,175.30
  5. Step 5: Solve for x
    x = 26,679,374,175.30/205,057.10
  6. Step 6: Final answer
    x = 130,107.05

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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.