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Finding the Fourth Proportional to 139,420.16, 192,401.03 and 75,757.95

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Solution

The fourth proportional to 139,420.16, 192,401.03 and 75,757.95 is: 104,546.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,420.16 : 192,401.03 = 75,757.95 : x
  2. Step 2: Convert to fraction form
    139,420.16/192,401.03 = 75,757.95/x
  3. Step 3: Cross multiply
    139,420.16x = 192,401.03 × 75,757.95
  4. Step 4: Simplify right side
    139,420.16x = 14,575,907,800.08
  5. Step 5: Solve for x
    x = 14,575,907,800.08/139,420.16
  6. Step 6: Final answer
    x = 104,546.63

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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.