Home / 142,811.80-214,217.70-120,002.20

Finding the Fourth Proportional to 142,811.80, 214,217.70 and 120,002.20

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Solution

The fourth proportional to 142,811.80, 214,217.70 and 120,002.20 is: 180,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,811.80 : 214,217.70 = 120,002.20 : x
  2. Step 2: Convert to fraction form
    142,811.80/214,217.70 = 120,002.20/x
  3. Step 3: Cross multiply
    142,811.80x = 214,217.70 × 120,002.20
  4. Step 4: Simplify right side
    142,811.80x = 25,706,595,278.94
  5. Step 5: Solve for x
    x = 25,706,595,278.94/142,811.80
  6. Step 6: Final answer
    x = 180,003.30

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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.