Home / 120,516.80-166,318.61-68,838.39

Finding the Fourth Proportional to 120,516.80, 166,318.61 and 68,838.39

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Solution

The fourth proportional to 120,516.80, 166,318.61 and 68,838.39 is: 95,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,516.80 : 166,318.61 = 68,838.39 : x
  2. Step 2: Convert to fraction form
    120,516.80/166,318.61 = 68,838.39/x
  3. Step 3: Cross multiply
    120,516.80x = 166,318.61 × 68,838.39
  4. Step 4: Simplify right side
    120,516.80x = 11,449,104,995.25
  5. Step 5: Solve for x
    x = 11,449,104,995.25/120,516.80
  6. Step 6: Final answer
    x = 95,000.08

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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.