Home / 91,351.40-137,027.10-70,589.80

Finding the Fourth Proportional to 91,351.40, 137,027.10 and 70,589.80

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Solution

The fourth proportional to 91,351.40, 137,027.10 and 70,589.80 is: 105,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,351.40 : 137,027.10 = 70,589.80 : x
  2. Step 2: Convert to fraction form
    91,351.40/137,027.10 = 70,589.80/x
  3. Step 3: Cross multiply
    91,351.40x = 137,027.10 × 70,589.80
  4. Step 4: Simplify right side
    91,351.40x = 9,672,715,583.58
  5. Step 5: Solve for x
    x = 9,672,715,583.58/91,351.40
  6. Step 6: Final answer
    x = 105,884.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.