Home / 143,152.20-214,901.10-142,115.40

Finding the Fourth Proportional to 143,152.20, 214,901.10 and 142,115.40

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Solution

The fourth proportional to 143,152.20, 214,901.10 and 142,115.40 is: 213,344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,152.20 : 214,901.10 = 142,115.40 : x
  2. Step 2: Convert to fraction form
    143,152.20/214,901.10 = 142,115.40/x
  3. Step 3: Cross multiply
    143,152.20x = 214,901.10 × 142,115.40
  4. Step 4: Simplify right side
    143,152.20x = 30,540,755,786.94
  5. Step 5: Solve for x
    x = 30,540,755,786.94/143,152.20
  6. Step 6: Final answer
    x = 213,344.65

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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.