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Finding the Fourth Proportional to 133,069.90, 199,604.85 and 127,821.10

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Solution

The fourth proportional to 133,069.90, 199,604.85 and 127,821.10 is: 191,731.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,069.90 : 199,604.85 = 127,821.10 : x
  2. Step 2: Convert to fraction form
    133,069.90/199,604.85 = 127,821.10/x
  3. Step 3: Cross multiply
    133,069.90x = 199,604.85 × 127,821.10
  4. Step 4: Simplify right side
    133,069.90x = 25,513,711,492.34
  5. Step 5: Solve for x
    x = 25,513,711,492.34/133,069.90
  6. Step 6: Final answer
    x = 191,731.65

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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.