Home / 133,003.40-199,505.10-83,139.80

Finding the Fourth Proportional to 133,003.40, 199,505.10 and 83,139.80

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Solution

The fourth proportional to 133,003.40, 199,505.10 and 83,139.80 is: 124,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,003.40 : 199,505.10 = 83,139.80 : x
  2. Step 2: Convert to fraction form
    133,003.40/199,505.10 = 83,139.80/x
  3. Step 3: Cross multiply
    133,003.40x = 199,505.10 × 83,139.80
  4. Step 4: Simplify right side
    133,003.40x = 16,586,814,112.98
  5. Step 5: Solve for x
    x = 16,586,814,112.98/133,003.40
  6. Step 6: Final answer
    x = 124,709.70

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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.