Home / 143,288.10-214,640.55-73,206.90

Finding the Fourth Proportional to 143,288.10, 214,640.55 and 73,206.90

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Solution

The fourth proportional to 143,288.10, 214,640.55 and 73,206.90 is: 109,661.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,288.10 : 214,640.55 = 73,206.90 : x
  2. Step 2: Convert to fraction form
    143,288.10/214,640.55 = 73,206.90/x
  3. Step 3: Cross multiply
    143,288.10x = 214,640.55 × 73,206.90
  4. Step 4: Simplify right side
    143,288.10x = 15,713,169,279.80
  5. Step 5: Solve for x
    x = 15,713,169,279.80/143,288.10
  6. Step 6: Final answer
    x = 109,661.37

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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.