Home / 134,143.70-201,215.55-80,999.60

Finding the Fourth Proportional to 134,143.70, 201,215.55 and 80,999.60

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Solution

The fourth proportional to 134,143.70, 201,215.55 and 80,999.60 is: 121,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,143.70 : 201,215.55 = 80,999.60 : x
  2. Step 2: Convert to fraction form
    134,143.70/201,215.55 = 80,999.60/x
  3. Step 3: Cross multiply
    134,143.70x = 201,215.55 × 80,999.60
  4. Step 4: Simplify right side
    134,143.70x = 16,298,379,063.78
  5. Step 5: Solve for x
    x = 16,298,379,063.78/134,143.70
  6. Step 6: Final answer
    x = 121,499.40

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Similar ratio
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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.