Home / 91,939.96-126,833.74-78,653.94

Finding the Fourth Proportional to 91,939.96, 126,833.74 and 78,653.94

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Solution

The fourth proportional to 91,939.96, 126,833.74 and 78,653.94 is: 108,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939.96 : 126,833.74 = 78,653.94 : x
  2. Step 2: Convert to fraction form
    91,939.96/126,833.74 = 78,653.94/x
  3. Step 3: Cross multiply
    91,939.96x = 126,833.74 × 78,653.94
  4. Step 4: Simplify right side
    91,939.96x = 9,975,973,375.94
  5. Step 5: Solve for x
    x = 9,975,973,375.94/91,939.96
  6. Step 6: Final answer
    x = 108,505.30

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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.