Home / 149,754.31-206,669.36-81,777.60

Finding the Fourth Proportional to 149,754.31, 206,669.36 and 81,777.60

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Solution

The fourth proportional to 149,754.31, 206,669.36 and 81,777.60 is: 112,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,754.31 : 206,669.36 = 81,777.60 : x
  2. Step 2: Convert to fraction form
    149,754.31/206,669.36 = 81,777.60/x
  3. Step 3: Cross multiply
    149,754.31x = 206,669.36 × 81,777.60
  4. Step 4: Simplify right side
    149,754.31x = 16,900,924,458.78
  5. Step 5: Solve for x
    x = 16,900,924,458.78/149,754.31
  6. Step 6: Final answer
    x = 112,857.68

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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.