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Finding the Fourth Proportional to 173,054.80, 259,630.80 and 84,311.20

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Solution

The fourth proportional to 173,054.80, 259,630.80 and 84,311.20 is: 126,490.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,054.80 : 259,630.80 = 84,311.20 : x
  2. Step 2: Convert to fraction form
    173,054.80/259,630.80 = 84,311.20/x
  3. Step 3: Cross multiply
    173,054.80x = 259,630.80 × 84,311.20
  4. Step 4: Simplify right side
    173,054.80x = 21,889,784,304.96
  5. Step 5: Solve for x
    x = 21,889,784,304.96/173,054.80
  6. Step 6: Final answer
    x = 126,490.48

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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.