Home / 149,406.81-206,175.38-81,422.32

Finding the Fourth Proportional to 149,406.81, 206,175.38 and 81,422.32

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Solution

The fourth proportional to 149,406.81, 206,175.38 and 81,422.32 is: 112,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,406.81 : 206,175.38 = 81,422.32 : x
  2. Step 2: Convert to fraction form
    149,406.81/206,175.38 = 81,422.32/x
  3. Step 3: Cross multiply
    149,406.81x = 206,175.38 × 81,422.32
  4. Step 4: Simplify right side
    149,406.81x = 16,787,277,359.37
  5. Step 5: Solve for x
    x = 16,787,277,359.37/149,406.81
  6. Step 6: Final answer
    x = 112,359.52

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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.