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Finding the Fourth Proportional to 139,170.88, 192,054.09 and 75,508.21

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Solution

The fourth proportional to 139,170.88, 192,054.09 and 75,508.21 is: 104,200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,170.88 : 192,054.09 = 75,508.21 : x
  2. Step 2: Convert to fraction form
    139,170.88/192,054.09 = 75,508.21/x
  3. Step 3: Cross multiply
    139,170.88x = 192,054.09 × 75,508.21
  4. Step 4: Simplify right side
    139,170.88x = 14,501,660,559.08
  5. Step 5: Solve for x
    x = 14,501,660,559.08/139,170.88
  6. Step 6: Final answer
    x = 104,200.39

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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.