Home / 109,816.80-164,919.60-84,917.40

Finding the Fourth Proportional to 109,816.80, 164,919.60 and 84,917.40

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Solution

The fourth proportional to 109,816.80, 164,919.60 and 84,917.40 is: 127,526.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,816.80 : 164,919.60 = 84,917.40 : x
  2. Step 2: Convert to fraction form
    109,816.80/164,919.60 = 84,917.40/x
  3. Step 3: Cross multiply
    109,816.80x = 164,919.60 × 84,917.40
  4. Step 4: Simplify right side
    109,816.80x = 14,004,543,641.04
  5. Step 5: Solve for x
    x = 14,004,543,641.04/109,816.80
  6. Step 6: Final answer
    x = 127,526.42

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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.