Home / 128,308.50-192,542.94-61,755.66

Finding the Fourth Proportional to 128,308.50, 192,542.94 and 61,755.66

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Solution

The fourth proportional to 128,308.50, 192,542.94 and 61,755.66 is: 92,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,308.50 : 192,542.94 = 61,755.66 : x
  2. Step 2: Convert to fraction form
    128,308.50/192,542.94 = 61,755.66/x
  3. Step 3: Cross multiply
    128,308.50x = 192,542.94 × 61,755.66
  4. Step 4: Simplify right side
    128,308.50x = 11,890,616,338.04
  5. Step 5: Solve for x
    x = 11,890,616,338.04/128,308.50
  6. Step 6: Final answer
    x = 92,672.09

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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.