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Finding the Fourth Proportional to 166,429.89, 229,673.22 and 90,978.39

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Solution

The fourth proportional to 166,429.89, 229,673.22 and 90,978.39 is: 125,550.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,429.89 : 229,673.22 = 90,978.39 : x
  2. Step 2: Convert to fraction form
    166,429.89/229,673.22 = 90,978.39/x
  3. Step 3: Cross multiply
    166,429.89x = 229,673.22 × 90,978.39
  4. Step 4: Simplify right side
    166,429.89x = 20,895,299,781.72
  5. Step 5: Solve for x
    x = 20,895,299,781.72/166,429.89
  6. Step 6: Final answer
    x = 125,550.16

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1.5x scale

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.