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Finding the Fourth Proportional to 136,653.41, 205,043.43 and 52,385.42

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Solution

The fourth proportional to 136,653.41, 205,043.43 and 52,385.42 is: 78,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,653.41 : 205,043.43 = 52,385.42 : x
  2. Step 2: Convert to fraction form
    136,653.41/205,043.43 = 52,385.42/x
  3. Step 3: Cross multiply
    136,653.41x = 205,043.43 × 52,385.42
  4. Step 4: Simplify right side
    136,653.41x = 10,741,286,198.79
  5. Step 5: Solve for x
    x = 10,741,286,198.79/136,653.41
  6. Step 6: Final answer
    x = 78,602.40

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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.