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Finding the Fourth Proportional to 166,645.50, 229,970.79 and 91,194

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Solution

The fourth proportional to 166,645.50, 229,970.79 and 91,194 is: 125,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,645.50 : 229,970.79 = 91,194 : x
  2. Step 2: Convert to fraction form
    166,645.50/229,970.79 = 91,194/x
  3. Step 3: Cross multiply
    166,645.50x = 229,970.79 × 91,194
  4. Step 4: Simplify right side
    166,645.50x = 20,971,956,223.26
  5. Step 5: Solve for x
    x = 20,971,956,223.26/166,645.50
  6. Step 6: Final answer
    x = 125,847.72

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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.