Home / 166,890-230,313.60-91,443.36

Finding the Fourth Proportional to 166,890, 230,313.60 and 91,443.36

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Solution

The fourth proportional to 166,890, 230,313.60 and 91,443.36 is: 126,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,890 : 230,313.60 = 91,443.36 : x
  2. Step 2: Convert to fraction form
    166,890/230,313.60 = 91,443.36/x
  3. Step 3: Cross multiply
    166,890x = 230,313.60 × 91,443.36
  4. Step 4: Simplify right side
    166,890x = 21,060,649,437.70
  5. Step 5: Solve for x
    x = 21,060,649,437.70/166,890
  6. Step 6: Final answer
    x = 126,194.80

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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.