Home / 143,015.56-197,365.92-79,359.28

Finding the Fourth Proportional to 143,015.56, 197,365.92 and 79,359.28

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Solution

The fourth proportional to 143,015.56, 197,365.92 and 79,359.28 is: 109,518.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.56 : 197,365.92 = 79,359.28 : x
  2. Step 2: Convert to fraction form
    143,015.56/197,365.92 = 79,359.28/x
  3. Step 3: Cross multiply
    143,015.56x = 197,365.92 × 79,359.28
  4. Step 4: Simplify right side
    143,015.56x = 15,662,816,516.73
  5. Step 5: Solve for x
    x = 15,662,816,516.73/143,015.56
  6. Step 6: Final answer
    x = 109,518.27

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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.