Home / 149,116.25-205,774.26-81,133.49

Finding the Fourth Proportional to 149,116.25, 205,774.26 and 81,133.49

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Solution

The fourth proportional to 149,116.25, 205,774.26 and 81,133.49 is: 111,960.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,116.25 : 205,774.26 = 81,133.49 : x
  2. Step 2: Convert to fraction form
    149,116.25/205,774.26 = 81,133.49/x
  3. Step 3: Cross multiply
    149,116.25x = 205,774.26 × 81,133.49
  4. Step 4: Simplify right side
    149,116.25x = 16,695,182,837.10
  5. Step 5: Solve for x
    x = 16,695,182,837.10/149,116.25
  6. Step 6: Final answer
    x = 111,960.86

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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.