Home / 149,519.63-206,342.06-81,540.32

Finding the Fourth Proportional to 149,519.63, 206,342.06 and 81,540.32

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Solution

The fourth proportional to 149,519.63, 206,342.06 and 81,540.32 is: 112,528.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,519.63 : 206,342.06 = 81,540.32 : x
  2. Step 2: Convert to fraction form
    149,519.63/206,342.06 = 81,540.32/x
  3. Step 3: Cross multiply
    149,519.63x = 206,342.06 × 81,540.32
  4. Step 4: Simplify right side
    149,519.63x = 16,825,196,162.45
  5. Step 5: Solve for x
    x = 16,825,196,162.45/149,519.63
  6. Step 6: Final answer
    x = 112,528.34

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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.