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Finding the Fourth Proportional to 116,170, 160,289.88 and 68,405.92

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Solution

The fourth proportional to 116,170, 160,289.88 and 68,405.92 is: 94,385.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,170 : 160,289.88 = 68,405.92 : x
  2. Step 2: Convert to fraction form
    116,170/160,289.88 = 68,405.92/x
  3. Step 3: Cross multiply
    116,170x = 160,289.88 × 68,405.92
  4. Step 4: Simplify right side
    116,170x = 10,964,776,708.09
  5. Step 5: Solve for x
    x = 10,964,776,708.09/116,170
  6. Step 6: Final answer
    x = 94,385.61

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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.