Home / 144,287.72-199,121.46-80,628.20

Finding the Fourth Proportional to 144,287.72, 199,121.46 and 80,628.20

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Solution

The fourth proportional to 144,287.72, 199,121.46 and 80,628.20 is: 111,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,287.72 : 199,121.46 = 80,628.20 : x
  2. Step 2: Convert to fraction form
    144,287.72/199,121.46 = 80,628.20/x
  3. Step 3: Cross multiply
    144,287.72x = 199,121.46 × 80,628.20
  4. Step 4: Simplify right side
    144,287.72x = 16,054,804,901.17
  5. Step 5: Solve for x
    x = 16,054,804,901.17/144,287.72
  6. Step 6: Final answer
    x = 111,269.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.