Home / 120,938.67-166,882.68-67,215.02

Finding the Fourth Proportional to 120,938.67, 166,882.68 and 67,215.02

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Solution

The fourth proportional to 120,938.67, 166,882.68 and 67,215.02 is: 92,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,938.67 : 166,882.68 = 67,215.02 : x
  2. Step 2: Convert to fraction form
    120,938.67/166,882.68 = 67,215.02/x
  3. Step 3: Cross multiply
    120,938.67x = 166,882.68 × 67,215.02
  4. Step 4: Simplify right side
    120,938.67x = 11,217,021,839.44
  5. Step 5: Solve for x
    x = 11,217,021,839.44/120,938.67
  6. Step 6: Final answer
    x = 92,749.67

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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.