Home / 149,513.88-206,327.52-81,530.64

Finding the Fourth Proportional to 149,513.88, 206,327.52 and 81,530.64

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Solution

The fourth proportional to 149,513.88, 206,327.52 and 81,530.64 is: 112,511.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,513.88 : 206,327.52 = 81,530.64 : x
  2. Step 2: Convert to fraction form
    149,513.88/206,327.52 = 81,530.64/x
  3. Step 3: Cross multiply
    149,513.88x = 206,327.52 × 81,530.64
  4. Step 4: Simplify right side
    149,513.88x = 16,822,014,755.21
  5. Step 5: Solve for x
    x = 16,822,014,755.21/149,513.88
  6. Step 6: Final answer
    x = 112,511.39

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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.