Home / 159,865.38-220,698.81-103,309.02

Finding the Fourth Proportional to 159,865.38, 220,698.81 and 103,309.02

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Solution

The fourth proportional to 159,865.38, 220,698.81 and 103,309.02 is: 142,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,865.38 : 220,698.81 = 103,309.02 : x
  2. Step 2: Convert to fraction form
    159,865.38/220,698.81 = 103,309.02/x
  3. Step 3: Cross multiply
    159,865.38x = 220,698.81 × 103,309.02
  4. Step 4: Simplify right side
    159,865.38x = 22,800,177,776.27
  5. Step 5: Solve for x
    x = 22,800,177,776.27/159,865.38
  6. Step 6: Final answer
    x = 142,621.11

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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.