Home / 120,331.92-166,056.06-66,615.78

Finding the Fourth Proportional to 120,331.92, 166,056.06 and 66,615.78

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Solution

The fourth proportional to 120,331.92, 166,056.06 and 66,615.78 is: 91,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,331.92 : 166,056.06 = 66,615.78 : x
  2. Step 2: Convert to fraction form
    120,331.92/166,056.06 = 66,615.78/x
  3. Step 3: Cross multiply
    120,331.92x = 166,056.06 × 66,615.78
  4. Step 4: Simplify right side
    120,331.92x = 11,061,953,960.63
  5. Step 5: Solve for x
    x = 11,061,953,960.63/120,331.92
  6. Step 6: Final answer
    x = 91,928.67

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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.