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Finding the Fourth Proportional to 139,408.58, 192,376.67 and 75,746.22

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Solution

The fourth proportional to 139,408.58, 192,376.67 and 75,746.22 is: 104,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,408.58 : 192,376.67 = 75,746.22 : x
  2. Step 2: Convert to fraction form
    139,408.58/192,376.67 = 75,746.22/x
  3. Step 3: Cross multiply
    139,408.58x = 192,376.67 × 75,746.22
  4. Step 4: Simplify right side
    139,408.58x = 14,571,805,189.96
  5. Step 5: Solve for x
    x = 14,571,805,189.96/139,408.58
  6. Step 6: Final answer
    x = 104,525.89

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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.