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Finding the Fourth Proportional to 154,692.72, 231,579.54 and 84,358.80

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Solution

The fourth proportional to 154,692.72, 231,579.54 and 84,358.80 is: 126,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,692.72 : 231,579.54 = 84,358.80 : x
  2. Step 2: Convert to fraction form
    154,692.72/231,579.54 = 84,358.80/x
  3. Step 3: Cross multiply
    154,692.72x = 231,579.54 × 84,358.80
  4. Step 4: Simplify right side
    154,692.72x = 19,535,772,098.95
  5. Step 5: Solve for x
    x = 19,535,772,098.95/154,692.72
  6. Step 6: Final answer
    x = 126,287.60

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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.