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Finding the Fourth Proportional to 136,830.78, 205,244.76 and 43,336.56

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Solution

The fourth proportional to 136,830.78, 205,244.76 and 43,336.56 is: 65,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,830.78 : 205,244.76 = 43,336.56 : x
  2. Step 2: Convert to fraction form
    136,830.78/205,244.76 = 43,336.56/x
  3. Step 3: Cross multiply
    136,830.78x = 205,244.76 × 43,336.56
  4. Step 4: Simplify right side
    136,830.78x = 8,894,601,856.43
  5. Step 5: Solve for x
    x = 8,894,601,856.43/136,830.78
  6. Step 6: Final answer
    x = 65,004.39

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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.