Home / 149,561.40-206,399.34-85,911.96

Finding the Fourth Proportional to 149,561.40, 206,399.34 and 85,911.96

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Solution

The fourth proportional to 149,561.40, 206,399.34 and 85,911.96 is: 118,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,561.40 : 206,399.34 = 85,911.96 : x
  2. Step 2: Convert to fraction form
    149,561.40/206,399.34 = 85,911.96/x
  3. Step 3: Cross multiply
    149,561.40x = 206,399.34 × 85,911.96
  4. Step 4: Simplify right side
    149,561.40x = 17,732,171,842.11
  5. Step 5: Solve for x
    x = 17,732,171,842.11/149,561.40
  6. Step 6: Final answer
    x = 118,561.15

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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.