Home / 128,322.50-192,563.94-61,769.66

Finding the Fourth Proportional to 128,322.50, 192,563.94 and 61,769.66

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Solution

The fourth proportional to 128,322.50, 192,563.94 and 61,769.66 is: 92,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,322.50 : 192,563.94 = 61,769.66 : x
  2. Step 2: Convert to fraction form
    128,322.50/192,563.94 = 61,769.66/x
  3. Step 3: Cross multiply
    128,322.50x = 192,563.94 × 61,769.66
  4. Step 4: Simplify right side
    128,322.50x = 11,894,609,102.06
  5. Step 5: Solve for x
    x = 11,894,609,102.06/128,322.50
  6. Step 6: Final answer
    x = 92,693.09

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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.