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Finding the Fourth Proportional to 138,273.40, 207,198.80 and 93,127.80

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Solution

The fourth proportional to 138,273.40, 207,198.80 and 93,127.80 is: 139,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,273.40 : 207,198.80 = 93,127.80 : x
  2. Step 2: Convert to fraction form
    138,273.40/207,198.80 = 93,127.80/x
  3. Step 3: Cross multiply
    138,273.40x = 207,198.80 × 93,127.80
  4. Step 4: Simplify right side
    138,273.40x = 19,295,968,406.64
  5. Step 5: Solve for x
    x = 19,295,968,406.64/138,273.40
  6. Step 6: Final answer
    x = 139,549.39

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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.