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Finding the Fourth Proportional to 136,940.93, 205,270.46 and 66,733.37

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Solution

The fourth proportional to 136,940.93, 205,270.46 and 66,733.37 is: 100,031.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,940.93 : 205,270.46 = 66,733.37 : x
  2. Step 2: Convert to fraction form
    136,940.93/205,270.46 = 66,733.37/x
  3. Step 3: Cross multiply
    136,940.93x = 205,270.46 × 66,733.37
  4. Step 4: Simplify right side
    136,940.93x = 13,698,389,223.58
  5. Step 5: Solve for x
    x = 13,698,389,223.58/136,940.93
  6. Step 6: Final answer
    x = 100,031.37

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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.