Home / 143,480.91-215,226.81-73,278.21

Finding the Fourth Proportional to 143,480.91, 215,226.81 and 73,278.21

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Solution

The fourth proportional to 143,480.91, 215,226.81 and 73,278.21 is: 109,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,480.91 : 215,226.81 = 73,278.21 : x
  2. Step 2: Convert to fraction form
    143,480.91/215,226.81 = 73,278.21/x
  3. Step 3: Cross multiply
    143,480.91x = 215,226.81 × 73,278.21
  4. Step 4: Simplify right side
    143,480.91x = 15,771,435,380.81
  5. Step 5: Solve for x
    x = 15,771,435,380.81/143,480.91
  6. Step 6: Final answer
    x = 109,920.10

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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.