Home / 156,283.70-215,667.05-91,751.88

Finding the Fourth Proportional to 156,283.70, 215,667.05 and 91,751.88

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Solution

The fourth proportional to 156,283.70, 215,667.05 and 91,751.88 is: 126,614.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,283.70 : 215,667.05 = 91,751.88 : x
  2. Step 2: Convert to fraction form
    156,283.70/215,667.05 = 91,751.88/x
  3. Step 3: Cross multiply
    156,283.70x = 215,667.05 × 91,751.88
  4. Step 4: Simplify right side
    156,283.70x = 19,787,856,832.79
  5. Step 5: Solve for x
    x = 19,787,856,832.79/156,283.70
  6. Step 6: Final answer
    x = 126,614.97

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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.