Home / 123,550.20-185,325.30-81,486.90

Finding the Fourth Proportional to 123,550.20, 185,325.30 and 81,486.90

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Solution

The fourth proportional to 123,550.20, 185,325.30 and 81,486.90 is: 122,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,550.20 : 185,325.30 = 81,486.90 : x
  2. Step 2: Convert to fraction form
    123,550.20/185,325.30 = 81,486.90/x
  3. Step 3: Cross multiply
    123,550.20x = 185,325.30 × 81,486.90
  4. Step 4: Simplify right side
    123,550.20x = 15,101,584,188.57
  5. Step 5: Solve for x
    x = 15,101,584,188.57/123,550.20
  6. Step 6: Final answer
    x = 122,230.35

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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.