Home / 145,191.94-200,353.98-81,517.60

Finding the Fourth Proportional to 145,191.94, 200,353.98 and 81,517.60

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Solution

The fourth proportional to 145,191.94, 200,353.98 and 81,517.60 is: 112,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,191.94 : 200,353.98 = 81,517.60 : x
  2. Step 2: Convert to fraction form
    145,191.94/200,353.98 = 81,517.60/x
  3. Step 3: Cross multiply
    145,191.94x = 200,353.98 × 81,517.60
  4. Step 4: Simplify right side
    145,191.94x = 16,332,375,600.05
  5. Step 5: Solve for x
    x = 16,332,375,600.05/145,191.94
  6. Step 6: Final answer
    x = 112,488.17

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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.