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Finding the Fourth Proportional to 89,108.80, 133,699.20 and 39,198.40

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Solution

The fourth proportional to 89,108.80, 133,699.20 and 39,198.40 is: 58,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,108.80 : 133,699.20 = 39,198.40 : x
  2. Step 2: Convert to fraction form
    89,108.80/133,699.20 = 39,198.40/x
  3. Step 3: Cross multiply
    89,108.80x = 133,699.20 × 39,198.40
  4. Step 4: Simplify right side
    89,108.80x = 5,240,794,721.28
  5. Step 5: Solve for x
    x = 5,240,794,721.28/89,108.80
  6. Step 6: Final answer
    x = 58,813.44

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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.