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Finding the Fourth Proportional to 143,175.90, 214,763.85 and 120,020.70

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Solution

The fourth proportional to 143,175.90, 214,763.85 and 120,020.70 is: 180,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,175.90 : 214,763.85 = 120,020.70 : x
  2. Step 2: Convert to fraction form
    143,175.90/214,763.85 = 120,020.70/x
  3. Step 3: Cross multiply
    143,175.90x = 214,763.85 × 120,020.70
  4. Step 4: Simplify right side
    143,175.90x = 25,776,107,611.70
  5. Step 5: Solve for x
    x = 25,776,107,611.70/143,175.90
  6. Step 6: Final answer
    x = 180,031.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.