Home / 149,742.48-206,645.07-81,760.05

Finding the Fourth Proportional to 149,742.48, 206,645.07 and 81,760.05

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Solution

The fourth proportional to 149,742.48, 206,645.07 and 81,760.05 is: 112,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,742.48 : 206,645.07 = 81,760.05 : x
  2. Step 2: Convert to fraction form
    149,742.48/206,645.07 = 81,760.05/x
  3. Step 3: Cross multiply
    149,742.48x = 206,645.07 × 81,760.05
  4. Step 4: Simplify right side
    149,742.48x = 16,895,311,255.45
  5. Step 5: Solve for x
    x = 16,895,311,255.45/149,742.48
  6. Step 6: Final answer
    x = 112,829.11

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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.