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Finding the Fourth Proportional to 201,263.46, 301,876.68 and 68,128.50

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Solution

The fourth proportional to 201,263.46, 301,876.68 and 68,128.50 is: 102,186.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,263.46 : 301,876.68 = 68,128.50 : x
  2. Step 2: Convert to fraction form
    201,263.46/301,876.68 = 68,128.50/x
  3. Step 3: Cross multiply
    201,263.46x = 301,876.68 × 68,128.50
  4. Step 4: Simplify right side
    201,263.46x = 20,566,405,393.38
  5. Step 5: Solve for x
    x = 20,566,405,393.38/201,263.46
  6. Step 6: Final answer
    x = 102,186.48

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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.