Home / 143,015.20-197,361.84-79,354.24

Finding the Fourth Proportional to 143,015.20, 197,361.84 and 79,354.24

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Solution

The fourth proportional to 143,015.20, 197,361.84 and 79,354.24 is: 109,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.20 : 197,361.84 = 79,354.24 : x
  2. Step 2: Convert to fraction form
    143,015.20/197,361.84 = 79,354.24/x
  3. Step 3: Cross multiply
    143,015.20x = 197,361.84 × 79,354.24
  4. Step 4: Simplify right side
    143,015.20x = 15,661,498,818.20
  5. Step 5: Solve for x
    x = 15,661,498,818.20/143,015.20
  6. Step 6: Final answer
    x = 109,509.33

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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.