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Finding the Fourth Proportional to 149,637.98, 206,493.09 and 81,650.90

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Solution

The fourth proportional to 149,637.98, 206,493.09 and 81,650.90 is: 112,674.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,637.98 : 206,493.09 = 81,650.90 : x
  2. Step 2: Convert to fraction form
    149,637.98/206,493.09 = 81,650.90/x
  3. Step 3: Cross multiply
    149,637.98x = 206,493.09 × 81,650.90
  4. Step 4: Simplify right side
    149,637.98x = 16,860,345,609.82
  5. Step 5: Solve for x
    x = 16,860,345,609.82/149,637.98
  6. Step 6: Final answer
    x = 112,674.24

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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.