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Finding the Fourth Proportional to 162,008.20, 243,012.30 and 56,789.20

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Solution

The fourth proportional to 162,008.20, 243,012.30 and 56,789.20 is: 85,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,008.20 : 243,012.30 = 56,789.20 : x
  2. Step 2: Convert to fraction form
    162,008.20/243,012.30 = 56,789.20/x
  3. Step 3: Cross multiply
    162,008.20x = 243,012.30 × 56,789.20
  4. Step 4: Simplify right side
    162,008.20x = 13,800,474,107.16
  5. Step 5: Solve for x
    x = 13,800,474,107.16/162,008.20
  6. Step 6: Final answer
    x = 85,183.80

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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.