Home / 109,660.43-164,116.37-91,911.12

Finding the Fourth Proportional to 109,660.43, 164,116.37 and 91,911.12

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Solution

The fourth proportional to 109,660.43, 164,116.37 and 91,911.12 is: 137,552.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,660.43 : 164,116.37 = 91,911.12 : x
  2. Step 2: Convert to fraction form
    109,660.43/164,116.37 = 91,911.12/x
  3. Step 3: Cross multiply
    109,660.43x = 164,116.37 × 91,911.12
  4. Step 4: Simplify right side
    109,660.43x = 15,084,118,917.48
  5. Step 5: Solve for x
    x = 15,084,118,917.48/109,660.43
  6. Step 6: Final answer
    x = 137,552.98

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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.