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Finding the Fourth Proportional to 128,519.34, 192,742.02 and 44,276.10

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Solution

The fourth proportional to 128,519.34, 192,742.02 and 44,276.10 is: 66,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519.34 : 192,742.02 = 44,276.10 : x
  2. Step 2: Convert to fraction form
    128,519.34/192,742.02 = 44,276.10/x
  3. Step 3: Cross multiply
    128,519.34x = 192,742.02 × 44,276.10
  4. Step 4: Simplify right side
    128,519.34x = 8,533,864,951.72
  5. Step 5: Solve for x
    x = 8,533,864,951.72/128,519.34
  6. Step 6: Final answer
    x = 66,401.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.