Home / 109,782.54-164,713.32-43,185.78

Finding the Fourth Proportional to 109,782.54, 164,713.32 and 43,185.78

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Solution

The fourth proportional to 109,782.54, 164,713.32 and 43,185.78 is: 64,794.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.54 : 164,713.32 = 43,185.78 : x
  2. Step 2: Convert to fraction form
    109,782.54/164,713.32 = 43,185.78/x
  3. Step 3: Cross multiply
    109,782.54x = 164,713.32 × 43,185.78
  4. Step 4: Simplify right side
    109,782.54x = 7,113,273,200.59
  5. Step 5: Solve for x
    x = 7,113,273,200.59/109,782.54
  6. Step 6: Final answer
    x = 64,794.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.