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Finding the Fourth Proportional to 139,427.75, 192,405.03 and 75,764.18

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Solution

The fourth proportional to 139,427.75, 192,405.03 and 75,764.18 is: 104,551.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,427.75 : 192,405.03 = 75,764.18 : x
  2. Step 2: Convert to fraction form
    139,427.75/192,405.03 = 75,764.18/x
  3. Step 3: Cross multiply
    139,427.75x = 192,405.03 × 75,764.18
  4. Step 4: Simplify right side
    139,427.75x = 14,577,409,325.83
  5. Step 5: Solve for x
    x = 14,577,409,325.83/139,427.75
  6. Step 6: Final answer
    x = 104,551.71

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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.