Home / 143,882.10-215,823.15-80,637.30

Finding the Fourth Proportional to 143,882.10, 215,823.15 and 80,637.30

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Solution

The fourth proportional to 143,882.10, 215,823.15 and 80,637.30 is: 120,955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,882.10 : 215,823.15 = 80,637.30 : x
  2. Step 2: Convert to fraction form
    143,882.10/215,823.15 = 80,637.30/x
  3. Step 3: Cross multiply
    143,882.10x = 215,823.15 × 80,637.30
  4. Step 4: Simplify right side
    143,882.10x = 17,403,396,093.50
  5. Step 5: Solve for x
    x = 17,403,396,093.50/143,882.10
  6. Step 6: Final answer
    x = 120,955.95

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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.