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Finding the Fourth Proportional to 128,079, 192,119.58 and 44,973

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Solution

The fourth proportional to 128,079, 192,119.58 and 44,973 is: 67,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,079 : 192,119.58 = 44,973 : x
  2. Step 2: Convert to fraction form
    128,079/192,119.58 = 44,973/x
  3. Step 3: Cross multiply
    128,079x = 192,119.58 × 44,973
  4. Step 4: Simplify right side
    128,079x = 8,640,193,871.34
  5. Step 5: Solve for x
    x = 8,640,193,871.34/128,079
  6. Step 6: Final answer
    x = 67,459.88

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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.