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Finding the Fourth Proportional to 139,343.34, 192,294.36 and 75,682.20

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Solution

The fourth proportional to 139,343.34, 192,294.36 and 75,682.20 is: 104,441.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,343.34 : 192,294.36 = 75,682.20 : x
  2. Step 2: Convert to fraction form
    139,343.34/192,294.36 = 75,682.20/x
  3. Step 3: Cross multiply
    139,343.34x = 192,294.36 × 75,682.20
  4. Step 4: Simplify right side
    139,343.34x = 14,553,260,212.39
  5. Step 5: Solve for x
    x = 14,553,260,212.39/139,343.34
  6. Step 6: Final answer
    x = 104,441.74

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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.