Home / 156,212.55-215,493.97-91,639.55

Finding the Fourth Proportional to 156,212.55, 215,493.97 and 91,639.55

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Solution

The fourth proportional to 156,212.55, 215,493.97 and 91,639.55 is: 126,416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,212.55 : 215,493.97 = 91,639.55 : x
  2. Step 2: Convert to fraction form
    156,212.55/215,493.97 = 91,639.55/x
  3. Step 3: Cross multiply
    156,212.55x = 215,493.97 × 91,639.55
  4. Step 4: Simplify right side
    156,212.55x = 19,747,770,438.51
  5. Step 5: Solve for x
    x = 19,747,770,438.51/156,212.55
  6. Step 6: Final answer
    x = 126,416.03

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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.