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Finding the Fourth Proportional to 140,027.60, 209,652.60 and 136,139.60

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Solution

The fourth proportional to 140,027.60, 209,652.60 and 136,139.60 is: 203,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,027.60 : 209,652.60 = 136,139.60 : x
  2. Step 2: Convert to fraction form
    140,027.60/209,652.60 = 136,139.60/x
  3. Step 3: Cross multiply
    140,027.60x = 209,652.60 × 136,139.60
  4. Step 4: Simplify right side
    140,027.60x = 28,542,021,102.96
  5. Step 5: Solve for x
    x = 28,542,021,102.96/140,027.60
  6. Step 6: Final answer
    x = 203,831.40

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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.