Home / 109,473.20-164,274.60-79,816.40

Finding the Fourth Proportional to 109,473.20, 164,274.60 and 79,816.40

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Solution

The fourth proportional to 109,473.20, 164,274.60 and 79,816.40 is: 119,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,473.20 : 164,274.60 = 79,816.40 : x
  2. Step 2: Convert to fraction form
    109,473.20/164,274.60 = 79,816.40/x
  3. Step 3: Cross multiply
    109,473.20x = 164,274.60 × 79,816.40
  4. Step 4: Simplify right side
    109,473.20x = 13,111,807,183.44
  5. Step 5: Solve for x
    x = 13,111,807,183.44/109,473.20
  6. Step 6: Final answer
    x = 119,771.85

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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.