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Finding the Fourth Proportional to 185,907.80, 278,861.70 and 133,419.80

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Solution

The fourth proportional to 185,907.80, 278,861.70 and 133,419.80 is: 200,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,907.80 : 278,861.70 = 133,419.80 : x
  2. Step 2: Convert to fraction form
    185,907.80/278,861.70 = 133,419.80/x
  3. Step 3: Cross multiply
    185,907.80x = 278,861.70 × 133,419.80
  4. Step 4: Simplify right side
    185,907.80x = 37,205,672,241.66
  5. Step 5: Solve for x
    x = 37,205,672,241.66/185,907.80
  6. Step 6: Final answer
    x = 200,129.70

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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.