Home / 109,116.08-150,664.92-85,201.28

Finding the Fourth Proportional to 109,116.08, 150,664.92 and 85,201.28

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Solution

The fourth proportional to 109,116.08, 150,664.92 and 85,201.28 is: 117,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,116.08 : 150,664.92 = 85,201.28 : x
  2. Step 2: Convert to fraction form
    109,116.08/150,664.92 = 85,201.28/x
  3. Step 3: Cross multiply
    109,116.08x = 150,664.92 × 85,201.28
  4. Step 4: Simplify right side
    109,116.08x = 12,836,844,035.10
  5. Step 5: Solve for x
    x = 12,836,844,035.10/109,116.08
  6. Step 6: Final answer
    x = 117,643.93

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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.