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Finding the Fourth Proportional to 162,909.70, 225,002.01 and 129,783.94

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Solution

The fourth proportional to 162,909.70, 225,002.01 and 129,783.94 is: 179,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,909.70 : 225,002.01 = 129,783.94 : x
  2. Step 2: Convert to fraction form
    162,909.70/225,002.01 = 129,783.94/x
  3. Step 3: Cross multiply
    162,909.70x = 225,002.01 × 129,783.94
  4. Step 4: Simplify right side
    162,909.70x = 29,201,647,365.72
  5. Step 5: Solve for x
    x = 29,201,647,365.72/162,909.70
  6. Step 6: Final answer
    x = 179,250.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.