Home / 149,407.03-206,176.48-81,422.63

Finding the Fourth Proportional to 149,407.03, 206,176.48 and 81,422.63

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Solution

The fourth proportional to 149,407.03, 206,176.48 and 81,422.63 is: 112,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,407.03 : 206,176.48 = 81,422.63 : x
  2. Step 2: Convert to fraction form
    149,407.03/206,176.48 = 81,422.63/x
  3. Step 3: Cross multiply
    149,407.03x = 206,176.48 × 81,422.63
  4. Step 4: Simplify right side
    149,407.03x = 16,787,431,245.74
  5. Step 5: Solve for x
    x = 16,787,431,245.74/149,407.03
  6. Step 6: Final answer
    x = 112,360.38

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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.