Home / 143,474.90-215,217.81-73,272.20

Finding the Fourth Proportional to 143,474.90, 215,217.81 and 73,272.20

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Solution

The fourth proportional to 143,474.90, 215,217.81 and 73,272.20 is: 109,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,474.90 : 215,217.81 = 73,272.20 : x
  2. Step 2: Convert to fraction form
    143,474.90/215,217.81 = 73,272.20/x
  3. Step 3: Cross multiply
    143,474.90x = 215,217.81 × 73,272.20
  4. Step 4: Simplify right side
    143,474.90x = 15,769,481,341.79
  5. Step 5: Solve for x
    x = 15,769,481,341.79/143,474.90
  6. Step 6: Final answer
    x = 109,911.08

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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.