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Finding the Fourth Proportional to 133,041.20, 199,561.80 and 69,836.90

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Solution

The fourth proportional to 133,041.20, 199,561.80 and 69,836.90 is: 104,755.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,041.20 : 199,561.80 = 69,836.90 : x
  2. Step 2: Convert to fraction form
    133,041.20/199,561.80 = 69,836.90/x
  3. Step 3: Cross multiply
    133,041.20x = 199,561.80 × 69,836.90
  4. Step 4: Simplify right side
    133,041.20x = 13,936,777,470.42
  5. Step 5: Solve for x
    x = 13,936,777,470.42/133,041.20
  6. Step 6: Final answer
    x = 104,755.35

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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.