Home / 123,288.20-184,640.70-83,630.60

Finding the Fourth Proportional to 123,288.20, 184,640.70 and 83,630.60

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Solution

The fourth proportional to 123,288.20, 184,640.70 and 83,630.60 is: 125,248.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,288.20 : 184,640.70 = 83,630.60 : x
  2. Step 2: Convert to fraction form
    123,288.20/184,640.70 = 83,630.60/x
  3. Step 3: Cross multiply
    123,288.20x = 184,640.70 × 83,630.60
  4. Step 4: Simplify right side
    123,288.20x = 15,441,612,525.42
  5. Step 5: Solve for x
    x = 15,441,612,525.42/123,288.20
  6. Step 6: Final answer
    x = 125,248.10

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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.