Home / 109,523.20-164,187.60-72,101.20

Finding the Fourth Proportional to 109,523.20, 164,187.60 and 72,101.20

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Solution

The fourth proportional to 109,523.20, 164,187.60 and 72,101.20 is: 108,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,523.20 : 164,187.60 = 72,101.20 : x
  2. Step 2: Convert to fraction form
    109,523.20/164,187.60 = 72,101.20/x
  3. Step 3: Cross multiply
    109,523.20x = 164,187.60 × 72,101.20
  4. Step 4: Simplify right side
    109,523.20x = 11,838,122,985.12
  5. Step 5: Solve for x
    x = 11,838,122,985.12/109,523.20
  6. Step 6: Final answer
    x = 108,087.81

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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.