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Finding the Fourth Proportional to 136,642.52, 204,940.53 and 36,780.45

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Solution

The fourth proportional to 136,642.52, 204,940.53 and 36,780.45 is: 55,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,642.52 : 204,940.53 = 36,780.45 : x
  2. Step 2: Convert to fraction form
    136,642.52/204,940.53 = 36,780.45/x
  3. Step 3: Cross multiply
    136,642.52x = 204,940.53 × 36,780.45
  4. Step 4: Simplify right side
    136,642.52x = 7,537,804,916.64
  5. Step 5: Solve for x
    x = 7,537,804,916.64/136,642.52
  6. Step 6: Final answer
    x = 55,164.42

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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.