Home / 127,640.56-176,163.78-76,681.66

Finding the Fourth Proportional to 127,640.56, 176,163.78 and 76,681.66

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Solution

The fourth proportional to 127,640.56, 176,163.78 and 76,681.66 is: 105,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,640.56 : 176,163.78 = 76,681.66 : x
  2. Step 2: Convert to fraction form
    127,640.56/176,163.78 = 76,681.66/x
  3. Step 3: Cross multiply
    127,640.56x = 176,163.78 × 76,681.66
  4. Step 4: Simplify right side
    127,640.56x = 13,508,531,082.27
  5. Step 5: Solve for x
    x = 13,508,531,082.27/127,640.56
  6. Step 6: Final answer
    x = 105,832.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.