Home / 106,979.70-160,469.55-99,981.30

Finding the Fourth Proportional to 106,979.70, 160,469.55 and 99,981.30

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Solution

The fourth proportional to 106,979.70, 160,469.55 and 99,981.30 is: 149,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,979.70 : 160,469.55 = 99,981.30 : x
  2. Step 2: Convert to fraction form
    106,979.70/160,469.55 = 99,981.30/x
  3. Step 3: Cross multiply
    106,979.70x = 160,469.55 × 99,981.30
  4. Step 4: Simplify right side
    106,979.70x = 16,043,954,219.42
  5. Step 5: Solve for x
    x = 16,043,954,219.42/106,979.70
  6. Step 6: Final answer
    x = 149,971.95

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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.