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Finding the Fourth Proportional to 139,203.11, 192,100.29 and 75,540.91

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Solution

The fourth proportional to 139,203.11, 192,100.29 and 75,540.91 is: 104,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.11 : 192,100.29 = 75,540.91 : x
  2. Step 2: Convert to fraction form
    139,203.11/192,100.29 = 75,540.91/x
  3. Step 3: Cross multiply
    139,203.11x = 192,100.29 × 75,540.91
  4. Step 4: Simplify right side
    139,203.11x = 14,511,430,237.61
  5. Step 5: Solve for x
    x = 14,511,430,237.61/139,203.11
  6. Step 6: Final answer
    x = 104,246.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.