Home / 345,310.86-518,011.65-120,675.18

Finding the Fourth Proportional to 345,310.86, 518,011.65 and 120,675.18

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Solution

The fourth proportional to 345,310.86, 518,011.65 and 120,675.18 is: 181,028.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,310.86 : 518,011.65 = 120,675.18 : x
  2. Step 2: Convert to fraction form
    345,310.86/518,011.65 = 120,675.18/x
  3. Step 3: Cross multiply
    345,310.86x = 518,011.65 × 120,675.18
  4. Step 4: Simplify right side
    345,310.86x = 62,511,149,105.85
  5. Step 5: Solve for x
    x = 62,511,149,105.85/345,310.86
  6. Step 6: Final answer
    x = 181,028.62

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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.