Home / 109,512.10-164,268.15-72,114.40

Finding the Fourth Proportional to 109,512.10, 164,268.15 and 72,114.40

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Solution

The fourth proportional to 109,512.10, 164,268.15 and 72,114.40 is: 108,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512.10 : 164,268.15 = 72,114.40 : x
  2. Step 2: Convert to fraction form
    109,512.10/164,268.15 = 72,114.40/x
  3. Step 3: Cross multiply
    109,512.10x = 164,268.15 × 72,114.40
  4. Step 4: Simplify right side
    109,512.10x = 11,846,099,076.36
  5. Step 5: Solve for x
    x = 11,846,099,076.36/109,512.10
  6. Step 6: Final answer
    x = 108,171.60

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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.