Home / 345,782.20-518,746.20-109,148.80

Finding the Fourth Proportional to 345,782.20, 518,746.20 and 109,148.80

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Solution

The fourth proportional to 345,782.20, 518,746.20 and 109,148.80 is: 163,746.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,782.20 : 518,746.20 = 109,148.80 : x
  2. Step 2: Convert to fraction form
    345,782.20/518,746.20 = 109,148.80/x
  3. Step 3: Cross multiply
    345,782.20x = 518,746.20 × 109,148.80
  4. Step 4: Simplify right side
    345,782.20x = 56,620,525,234.56
  5. Step 5: Solve for x
    x = 56,620,525,234.56/345,782.20
  6. Step 6: Final answer
    x = 163,746.21

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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.