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Finding the Fourth Proportional to 133,091.10, 199,636.65 and 126,530.10

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Solution

The fourth proportional to 133,091.10, 199,636.65 and 126,530.10 is: 189,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,091.10 : 199,636.65 = 126,530.10 : x
  2. Step 2: Convert to fraction form
    133,091.10/199,636.65 = 126,530.10/x
  3. Step 3: Cross multiply
    133,091.10x = 199,636.65 × 126,530.10
  4. Step 4: Simplify right side
    133,091.10x = 25,260,045,288.17
  5. Step 5: Solve for x
    x = 25,260,045,288.17/133,091.10
  6. Step 6: Final answer
    x = 189,795.15

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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.