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Finding the Fourth Proportional to 164,864.40, 247,213.80 and 80,630.88

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Solution

The fourth proportional to 164,864.40, 247,213.80 and 80,630.88 is: 120,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,864.40 : 247,213.80 = 80,630.88 : x
  2. Step 2: Convert to fraction form
    164,864.40/247,213.80 = 80,630.88/x
  3. Step 3: Cross multiply
    164,864.40x = 247,213.80 × 80,630.88
  4. Step 4: Simplify right side
    164,864.40x = 19,933,066,242.14
  5. Step 5: Solve for x
    x = 19,933,066,242.14/164,864.40
  6. Step 6: Final answer
    x = 120,905.82

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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.