Home / 143,015.57-197,361.48-79,353.83

Finding the Fourth Proportional to 143,015.57, 197,361.48 and 79,353.83

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Solution

The fourth proportional to 143,015.57, 197,361.48 and 79,353.83 is: 109,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.57 : 197,361.48 = 79,353.83 : x
  2. Step 2: Convert to fraction form
    143,015.57/197,361.48 = 79,353.83/x
  3. Step 3: Cross multiply
    143,015.57x = 197,361.48 × 79,353.83
  4. Step 4: Simplify right side
    143,015.57x = 15,661,389,332.47
  5. Step 5: Solve for x
    x = 15,661,389,332.47/143,015.57
  6. Step 6: Final answer
    x = 109,508.28

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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.