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Finding the Fourth Proportional to 133,872.60, 200,420.10 and 129,984.60

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Solution

The fourth proportional to 133,872.60, 200,420.10 and 129,984.60 is: 194,599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,872.60 : 200,420.10 = 129,984.60 : x
  2. Step 2: Convert to fraction form
    133,872.60/200,420.10 = 129,984.60/x
  3. Step 3: Cross multiply
    133,872.60x = 200,420.10 × 129,984.60
  4. Step 4: Simplify right side
    133,872.60x = 26,051,526,530.46
  5. Step 5: Solve for x
    x = 26,051,526,530.46/133,872.60
  6. Step 6: Final answer
    x = 194,599.39

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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.