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Finding the Fourth Proportional to 133,620.10, 200,624.55 and 81,132.10

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Solution

The fourth proportional to 133,620.10, 200,624.55 and 81,132.10 is: 121,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,620.10 : 200,624.55 = 81,132.10 : x
  2. Step 2: Convert to fraction form
    133,620.10/200,624.55 = 81,132.10/x
  3. Step 3: Cross multiply
    133,620.10x = 200,624.55 × 81,132.10
  4. Step 4: Simplify right side
    133,620.10x = 16,277,091,053.06
  5. Step 5: Solve for x
    x = 16,277,091,053.06/133,620.10
  6. Step 6: Final answer
    x = 121,816.19

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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.