Home / 345,726.20-518,662.20-109,092.80

Finding the Fourth Proportional to 345,726.20, 518,662.20 and 109,092.80

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Solution

The fourth proportional to 345,726.20, 518,662.20 and 109,092.80 is: 163,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,726.20 : 518,662.20 = 109,092.80 : x
  2. Step 2: Convert to fraction form
    345,726.20/518,662.20 = 109,092.80/x
  3. Step 3: Cross multiply
    345,726.20x = 518,662.20 × 109,092.80
  4. Step 4: Simplify right side
    345,726.20x = 56,582,311,652.16
  5. Step 5: Solve for x
    x = 56,582,311,652.16/345,726.20
  6. Step 6: Final answer
    x = 163,662.20

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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.