Home / 143,387.23-215,109.56-80,297.07

Finding the Fourth Proportional to 143,387.23, 215,109.56 and 80,297.07

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Solution

The fourth proportional to 143,387.23, 215,109.56 and 80,297.07 is: 120,461.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.23 : 215,109.56 = 80,297.07 : x
  2. Step 2: Convert to fraction form
    143,387.23/215,109.56 = 80,297.07/x
  3. Step 3: Cross multiply
    143,387.23x = 215,109.56 × 80,297.07
  4. Step 4: Simplify right side
    143,387.23x = 17,272,667,396.99
  5. Step 5: Solve for x
    x = 17,272,667,396.99/143,387.23
  6. Step 6: Final answer
    x = 120,461.69

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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.