Home / 147,640.12-203,743.30-80,572.12

Finding the Fourth Proportional to 147,640.12, 203,743.30 and 80,572.12

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Solution

The fourth proportional to 147,640.12, 203,743.30 and 80,572.12 is: 111,189.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,640.12 : 203,743.30 = 80,572.12 : x
  2. Step 2: Convert to fraction form
    147,640.12/203,743.30 = 80,572.12/x
  3. Step 3: Cross multiply
    147,640.12x = 203,743.30 × 80,572.12
  4. Step 4: Simplify right side
    147,640.12x = 16,416,029,616.80
  5. Step 5: Solve for x
    x = 16,416,029,616.80/147,640.12
  6. Step 6: Final answer
    x = 111,189.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.