Home / 135,363.72-186,720.21-86,949.36

Finding the Fourth Proportional to 135,363.72, 186,720.21 and 86,949.36

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Solution

The fourth proportional to 135,363.72, 186,720.21 and 86,949.36 is: 119,937.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,363.72 : 186,720.21 = 86,949.36 : x
  2. Step 2: Convert to fraction form
    135,363.72/186,720.21 = 86,949.36/x
  3. Step 3: Cross multiply
    135,363.72x = 186,720.21 × 86,949.36
  4. Step 4: Simplify right side
    135,363.72x = 16,235,202,758.57
  5. Step 5: Solve for x
    x = 16,235,202,758.57/135,363.72
  6. Step 6: Final answer
    x = 119,937.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.