Home / 133,064.20-199,620.60-54,186.40

Finding the Fourth Proportional to 133,064.20, 199,620.60 and 54,186.40

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Solution

The fourth proportional to 133,064.20, 199,620.60 and 54,186.40 is: 81,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,064.20 : 199,620.60 = 54,186.40 : x
  2. Step 2: Convert to fraction form
    133,064.20/199,620.60 = 54,186.40/x
  3. Step 3: Cross multiply
    133,064.20x = 199,620.60 × 54,186.40
  4. Step 4: Simplify right side
    133,064.20x = 10,816,721,679.84
  5. Step 5: Solve for x
    x = 10,816,721,679.84/133,064.20
  6. Step 6: Final answer
    x = 81,289.50

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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.