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Finding the Fourth Proportional to 143,223.60, 214,932.60 and 80,043.60

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Solution

The fourth proportional to 143,223.60, 214,932.60 and 80,043.60 is: 120,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,223.60 : 214,932.60 = 80,043.60 : x
  2. Step 2: Convert to fraction form
    143,223.60/214,932.60 = 80,043.60/x
  3. Step 3: Cross multiply
    143,223.60x = 214,932.60 × 80,043.60
  4. Step 4: Simplify right side
    143,223.60x = 17,203,979,061.36
  5. Step 5: Solve for x
    x = 17,203,979,061.36/143,223.60
  6. Step 6: Final answer
    x = 120,119.72

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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.