Home / 109,619.80-164,429.70-103,168.60

Finding the Fourth Proportional to 109,619.80, 164,429.70 and 103,168.60

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Solution

The fourth proportional to 109,619.80, 164,429.70 and 103,168.60 is: 154,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,619.80 : 164,429.70 = 103,168.60 : x
  2. Step 2: Convert to fraction form
    109,619.80/164,429.70 = 103,168.60/x
  3. Step 3: Cross multiply
    109,619.80x = 164,429.70 × 103,168.60
  4. Step 4: Simplify right side
    109,619.80x = 16,963,981,947.42
  5. Step 5: Solve for x
    x = 16,963,981,947.42/109,619.80
  6. Step 6: Final answer
    x = 154,752.90

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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.