Home / 156,211.35-215,579.51-91,683.37

Finding the Fourth Proportional to 156,211.35, 215,579.51 and 91,683.37

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Solution

The fourth proportional to 156,211.35, 215,579.51 and 91,683.37 is: 126,527.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,211.35 : 215,579.51 = 91,683.37 : x
  2. Step 2: Convert to fraction form
    156,211.35/215,579.51 = 91,683.37/x
  3. Step 3: Cross multiply
    156,211.35x = 215,579.51 × 91,683.37
  4. Step 4: Simplify right side
    156,211.35x = 19,765,055,979.75
  5. Step 5: Solve for x
    x = 19,765,055,979.75/156,211.35
  6. Step 6: Final answer
    x = 126,527.66

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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.