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Finding the Fourth Proportional to 192,970.40, 289,373.59 and 79,039.67

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Solution

The fourth proportional to 192,970.40, 289,373.59 and 79,039.67 is: 118,525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,970.40 : 289,373.59 = 79,039.67 : x
  2. Step 2: Convert to fraction form
    192,970.40/289,373.59 = 79,039.67/x
  3. Step 3: Cross multiply
    192,970.40x = 289,373.59 × 79,039.67
  4. Step 4: Simplify right side
    192,970.40x = 22,871,991,415.85
  5. Step 5: Solve for x
    x = 22,871,991,415.85/192,970.40
  6. Step 6: Final answer
    x = 118,525.90

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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.