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Finding the Fourth Proportional to 189,025.20, 283,537.80 and 142,369.20

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Solution

The fourth proportional to 189,025.20, 283,537.80 and 142,369.20 is: 213,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,025.20 : 283,537.80 = 142,369.20 : x
  2. Step 2: Convert to fraction form
    189,025.20/283,537.80 = 142,369.20/x
  3. Step 3: Cross multiply
    189,025.20x = 283,537.80 × 142,369.20
  4. Step 4: Simplify right side
    189,025.20x = 40,367,049,755.76
  5. Step 5: Solve for x
    x = 40,367,049,755.76/189,025.20
  6. Step 6: Final answer
    x = 213,553.80

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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.