Home / 143,215.42-197,611.21-82,763.90

Finding the Fourth Proportional to 143,215.42, 197,611.21 and 82,763.90

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Solution

The fourth proportional to 143,215.42, 197,611.21 and 82,763.90 is: 114,199.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,215.42 : 197,611.21 = 82,763.90 : x
  2. Step 2: Convert to fraction form
    143,215.42/197,611.21 = 82,763.90/x
  3. Step 3: Cross multiply
    143,215.42x = 197,611.21 × 82,763.90
  4. Step 4: Simplify right side
    143,215.42x = 16,355,074,423.32
  5. Step 5: Solve for x
    x = 16,355,074,423.32/143,215.42
  6. Step 6: Final answer
    x = 114,199.12

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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.