Home / 123,578.20-185,540.10-76,922.20

Finding the Fourth Proportional to 123,578.20, 185,540.10 and 76,922.20

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Solution

The fourth proportional to 123,578.20, 185,540.10 and 76,922.20 is: 115,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,578.20 : 185,540.10 = 76,922.20 : x
  2. Step 2: Convert to fraction form
    123,578.20/185,540.10 = 76,922.20/x
  3. Step 3: Cross multiply
    123,578.20x = 185,540.10 × 76,922.20
  4. Step 4: Simplify right side
    123,578.20x = 14,272,152,680.22
  5. Step 5: Solve for x
    x = 14,272,152,680.22/123,578.20
  6. Step 6: Final answer
    x = 115,490.86

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1.5x scale

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.