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Finding the Fourth Proportional to 133,374.30, 200,061.45 and 128,708.70

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Solution

The fourth proportional to 133,374.30, 200,061.45 and 128,708.70 is: 193,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,374.30 : 200,061.45 = 128,708.70 : x
  2. Step 2: Convert to fraction form
    133,374.30/200,061.45 = 128,708.70/x
  3. Step 3: Cross multiply
    133,374.30x = 200,061.45 × 128,708.70
  4. Step 4: Simplify right side
    133,374.30x = 25,749,649,149.62
  5. Step 5: Solve for x
    x = 25,749,649,149.62/133,374.30
  6. Step 6: Final answer
    x = 193,063.05

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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.