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Finding the Fourth Proportional to 116,115.20, 160,234.44 and 65,813.12

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Solution

The fourth proportional to 116,115.20, 160,234.44 and 65,813.12 is: 90,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,115.20 : 160,234.44 = 65,813.12 : x
  2. Step 2: Convert to fraction form
    116,115.20/160,234.44 = 65,813.12/x
  3. Step 3: Cross multiply
    116,115.20x = 160,234.44 × 65,813.12
  4. Step 4: Simplify right side
    116,115.20x = 10,545,528,427.85
  5. Step 5: Solve for x
    x = 10,545,528,427.85/116,115.20
  6. Step 6: Final answer
    x = 90,819.53

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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.