Home / 149,717.16-206,600.90-81,720.63

Finding the Fourth Proportional to 149,717.16, 206,600.90 and 81,720.63

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Solution

The fourth proportional to 149,717.16, 206,600.90 and 81,720.63 is: 112,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,717.16 : 206,600.90 = 81,720.63 : x
  2. Step 2: Convert to fraction form
    149,717.16/206,600.90 = 81,720.63/x
  3. Step 3: Cross multiply
    149,717.16x = 206,600.90 × 81,720.63
  4. Step 4: Simplify right side
    149,717.16x = 16,883,555,297.96
  5. Step 5: Solve for x
    x = 16,883,555,297.96/149,717.16
  6. Step 6: Final answer
    x = 112,769.67

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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.