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Finding the Fourth Proportional to 89,183.40, 133,775.10 and 84,809.40

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Solution

The fourth proportional to 89,183.40, 133,775.10 and 84,809.40 is: 127,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,183.40 : 133,775.10 = 84,809.40 : x
  2. Step 2: Convert to fraction form
    89,183.40/133,775.10 = 84,809.40/x
  3. Step 3: Cross multiply
    89,183.40x = 133,775.10 × 84,809.40
  4. Step 4: Simplify right side
    89,183.40x = 11,345,385,965.94
  5. Step 5: Solve for x
    x = 11,345,385,965.94/89,183.40
  6. Step 6: Final answer
    x = 127,214.10

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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.