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Finding the Fourth Proportional to 192,969.40, 289,372.09 and 79,038.66

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Solution

The fourth proportional to 192,969.40, 289,372.09 and 79,038.66 is: 118,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,969.40 : 289,372.09 = 79,038.66 : x
  2. Step 2: Convert to fraction form
    192,969.40/289,372.09 = 79,038.66/x
  3. Step 3: Cross multiply
    192,969.40x = 289,372.09 × 79,038.66
  4. Step 4: Simplify right side
    192,969.40x = 22,871,582,563.24
  5. Step 5: Solve for x
    x = 22,871,582,563.24/192,969.40
  6. Step 6: Final answer
    x = 118,524.40

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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.