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Finding the Fourth Proportional to 136,004.60, 204,006.90 and 121,489.40

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Solution

The fourth proportional to 136,004.60, 204,006.90 and 121,489.40 is: 182,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,004.60 : 204,006.90 = 121,489.40 : x
  2. Step 2: Convert to fraction form
    136,004.60/204,006.90 = 121,489.40/x
  3. Step 3: Cross multiply
    136,004.60x = 204,006.90 × 121,489.40
  4. Step 4: Simplify right side
    136,004.60x = 24,784,675,876.86
  5. Step 5: Solve for x
    x = 24,784,675,876.86/136,004.60
  6. Step 6: Final answer
    x = 182,234.10

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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.