Home / 143,142.21-197,535.24-79,480.26

Finding the Fourth Proportional to 143,142.21, 197,535.24 and 79,480.26

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Solution

The fourth proportional to 143,142.21, 197,535.24 and 79,480.26 is: 109,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,142.21 : 197,535.24 = 79,480.26 : x
  2. Step 2: Convert to fraction form
    143,142.21/197,535.24 = 79,480.26/x
  3. Step 3: Cross multiply
    143,142.21x = 197,535.24 × 79,480.26
  4. Step 4: Simplify right side
    143,142.21x = 15,700,152,234.36
  5. Step 5: Solve for x
    x = 15,700,152,234.36/143,142.21
  6. Step 6: Final answer
    x = 109,682.20

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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.