Home / 123,518.20-185,450.10-76,862.20

Finding the Fourth Proportional to 123,518.20, 185,450.10 and 76,862.20

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Solution

The fourth proportional to 123,518.20, 185,450.10 and 76,862.20 is: 115,400.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,518.20 : 185,450.10 = 76,862.20 : x
  2. Step 2: Convert to fraction form
    123,518.20/185,450.10 = 76,862.20/x
  3. Step 3: Cross multiply
    123,518.20x = 185,450.10 × 76,862.20
  4. Step 4: Simplify right side
    123,518.20x = 14,254,102,676.22
  5. Step 5: Solve for x
    x = 14,254,102,676.22/123,518.20
  6. Step 6: Final answer
    x = 115,400.83

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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.