Home / 109,512.40-164,268.60-72,187.60

Finding the Fourth Proportional to 109,512.40, 164,268.60 and 72,187.60

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Solution

The fourth proportional to 109,512.40, 164,268.60 and 72,187.60 is: 108,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,512.40 : 164,268.60 = 72,187.60 : x
  2. Step 2: Convert to fraction form
    109,512.40/164,268.60 = 72,187.60/x
  3. Step 3: Cross multiply
    109,512.40x = 164,268.60 × 72,187.60
  4. Step 4: Simplify right side
    109,512.40x = 11,858,155,989.36
  5. Step 5: Solve for x
    x = 11,858,155,989.36/109,512.40
  6. Step 6: Final answer
    x = 108,281.40

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1.5x scale

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.