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Finding the Fourth Proportional to 143,143.80, 214,715.70 and 80,158.20

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Solution

The fourth proportional to 143,143.80, 214,715.70 and 80,158.20 is: 120,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.80 : 214,715.70 = 80,158.20 : x
  2. Step 2: Convert to fraction form
    143,143.80/214,715.70 = 80,158.20/x
  3. Step 3: Cross multiply
    143,143.80x = 214,715.70 × 80,158.20
  4. Step 4: Simplify right side
    143,143.80x = 17,211,224,023.74
  5. Step 5: Solve for x
    x = 17,211,224,023.74/143,143.80
  6. Step 6: Final answer
    x = 120,237.30

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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.