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Finding the Fourth Proportional to 162,138.60, 243,078.30 and 68,567.40

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Solution

The fourth proportional to 162,138.60, 243,078.30 and 68,567.40 is: 102,796.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,138.60 : 243,078.30 = 68,567.40 : x
  2. Step 2: Convert to fraction form
    162,138.60/243,078.30 = 68,567.40/x
  3. Step 3: Cross multiply
    162,138.60x = 243,078.30 × 68,567.40
  4. Step 4: Simplify right side
    162,138.60x = 16,667,247,027.42
  5. Step 5: Solve for x
    x = 16,667,247,027.42/162,138.60
  6. Step 6: Final answer
    x = 102,796.29

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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.