Home / 109,693.20-164,604.60-80,036.40

Finding the Fourth Proportional to 109,693.20, 164,604.60 and 80,036.40

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Solution

The fourth proportional to 109,693.20, 164,604.60 and 80,036.40 is: 120,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,693.20 : 164,604.60 = 80,036.40 : x
  2. Step 2: Convert to fraction form
    109,693.20/164,604.60 = 80,036.40/x
  3. Step 3: Cross multiply
    109,693.20x = 164,604.60 × 80,036.40
  4. Step 4: Simplify right side
    109,693.20x = 13,174,359,607.44
  5. Step 5: Solve for x
    x = 13,174,359,607.44/109,693.20
  6. Step 6: Final answer
    x = 120,101.88

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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.