Home / 149,669.79-206,548.56-81,691.08

Finding the Fourth Proportional to 149,669.79, 206,548.56 and 81,691.08

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Solution

The fourth proportional to 149,669.79, 206,548.56 and 81,691.08 is: 112,736.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,669.79 : 206,548.56 = 81,691.08 : x
  2. Step 2: Convert to fraction form
    149,669.79/206,548.56 = 81,691.08/x
  3. Step 3: Cross multiply
    149,669.79x = 206,548.56 × 81,691.08
  4. Step 4: Simplify right side
    149,669.79x = 16,873,174,938.84
  5. Step 5: Solve for x
    x = 16,873,174,938.84/149,669.79
  6. Step 6: Final answer
    x = 112,736.01

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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.