Home / 128,319.50-192,559.44-61,766.66

Finding the Fourth Proportional to 128,319.50, 192,559.44 and 61,766.66

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Solution

The fourth proportional to 128,319.50, 192,559.44 and 61,766.66 is: 92,688.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,319.50 : 192,559.44 = 61,766.66 : x
  2. Step 2: Convert to fraction form
    128,319.50/192,559.44 = 61,766.66/x
  3. Step 3: Cross multiply
    128,319.50x = 192,559.44 × 61,766.66
  4. Step 4: Simplify right side
    128,319.50x = 11,893,753,460.27
  5. Step 5: Solve for x
    x = 11,893,753,460.27/128,319.50
  6. Step 6: Final answer
    x = 92,688.59

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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.