Home / 229,970.20-345,012.72-80,212.64

Finding the Fourth Proportional to 229,970.20, 345,012.72 and 80,212.64

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Solution

The fourth proportional to 229,970.20, 345,012.72 and 80,212.64 is: 120,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,970.20 : 345,012.72 = 80,212.64 : x
  2. Step 2: Convert to fraction form
    229,970.20/345,012.72 = 80,212.64/x
  3. Step 3: Cross multiply
    229,970.20x = 345,012.72 × 80,212.64
  4. Step 4: Simplify right side
    229,970.20x = 27,674,381,104.78
  5. Step 5: Solve for x
    x = 27,674,381,104.78/229,970.20
  6. Step 6: Final answer
    x = 120,338.99

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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.