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Finding the Fourth Proportional to 89,216.70, 133,825.05 and 87,834.30

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Solution

The fourth proportional to 89,216.70, 133,825.05 and 87,834.30 is: 131,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,216.70 : 133,825.05 = 87,834.30 : x
  2. Step 2: Convert to fraction form
    89,216.70/133,825.05 = 87,834.30/x
  3. Step 3: Cross multiply
    89,216.70x = 133,825.05 × 87,834.30
  4. Step 4: Simplify right side
    89,216.70x = 11,754,429,589.22
  5. Step 5: Solve for x
    x = 11,754,429,589.22/89,216.70
  6. Step 6: Final answer
    x = 131,751.45

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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.