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Finding the Fourth Proportional to 128,354.86, 192,491.34 and 44,094.70

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Solution

The fourth proportional to 128,354.86, 192,491.34 and 44,094.70 is: 66,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,354.86 : 192,491.34 = 44,094.70 : x
  2. Step 2: Convert to fraction form
    128,354.86/192,491.34 = 44,094.70/x
  3. Step 3: Cross multiply
    128,354.86x = 192,491.34 × 44,094.70
  4. Step 4: Simplify right side
    128,354.86x = 8,487,847,889.90
  5. Step 5: Solve for x
    x = 8,487,847,889.90/128,354.86
  6. Step 6: Final answer
    x = 66,127.98

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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.