Home / 149,163.62-205,849.59-81,184.28

Finding the Fourth Proportional to 149,163.62, 205,849.59 and 81,184.28

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Solution

The fourth proportional to 149,163.62, 205,849.59 and 81,184.28 is: 112,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,163.62 : 205,849.59 = 81,184.28 : x
  2. Step 2: Convert to fraction form
    149,163.62/205,849.59 = 81,184.28/x
  3. Step 3: Cross multiply
    149,163.62x = 205,849.59 × 81,184.28
  4. Step 4: Simplify right side
    149,163.62x = 16,711,750,752.45
  5. Step 5: Solve for x
    x = 16,711,750,752.45/149,163.62
  6. Step 6: Final answer
    x = 112,036.37

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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.