Home / 91,863.14-126,677.79-86,505.53

Finding the Fourth Proportional to 91,863.14, 126,677.79 and 86,505.53

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Solution

The fourth proportional to 91,863.14, 126,677.79 and 86,505.53 is: 119,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.14 : 126,677.79 = 86,505.53 : x
  2. Step 2: Convert to fraction form
    91,863.14/126,677.79 = 86,505.53/x
  3. Step 3: Cross multiply
    91,863.14x = 126,677.79 × 86,505.53
  4. Step 4: Simplify right side
    91,863.14x = 10,958,328,729.79
  5. Step 5: Solve for x
    x = 10,958,328,729.79/91,863.14
  6. Step 6: Final answer
    x = 119,289.73

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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.