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Finding the Fourth Proportional to 138,253.37, 207,168.80 and 93,107.80

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Solution

The fourth proportional to 138,253.37, 207,168.80 and 93,107.80 is: 139,519.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,253.37 : 207,168.80 = 93,107.80 : x
  2. Step 2: Convert to fraction form
    138,253.37/207,168.80 = 93,107.80/x
  3. Step 3: Cross multiply
    138,253.37x = 207,168.80 × 93,107.80
  4. Step 4: Simplify right side
    138,253.37x = 19,289,030,911.49
  5. Step 5: Solve for x
    x = 19,289,030,911.49/138,253.37
  6. Step 6: Final answer
    x = 139,519.42

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1.5x scale

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.