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Finding the Fourth Proportional to 146,163.63, 218,611.98 and 86,048.85

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Solution

The fourth proportional to 146,163.63, 218,611.98 and 86,048.85 is: 128,700.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,163.63 : 218,611.98 = 86,048.85 : x
  2. Step 2: Convert to fraction form
    146,163.63/218,611.98 = 86,048.85/x
  3. Step 3: Cross multiply
    146,163.63x = 218,611.98 × 86,048.85
  4. Step 4: Simplify right side
    146,163.63x = 18,811,309,475.22
  5. Step 5: Solve for x
    x = 18,811,309,475.22/146,163.63
  6. Step 6: Final answer
    x = 128,700.34

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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.