Home / 156,249.48-215,611.29-91,711.74

Finding the Fourth Proportional to 156,249.48, 215,611.29 and 91,711.74

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Solution

The fourth proportional to 156,249.48, 215,611.29 and 91,711.74 is: 126,554.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,249.48 : 215,611.29 = 91,711.74 : x
  2. Step 2: Convert to fraction form
    156,249.48/215,611.29 = 91,711.74/x
  3. Step 3: Cross multiply
    156,249.48x = 215,611.29 × 91,711.74
  4. Step 4: Simplify right side
    156,249.48x = 19,774,086,569.54
  5. Step 5: Solve for x
    x = 19,774,086,569.54/156,249.48
  6. Step 6: Final answer
    x = 126,554.58

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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.