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Finding the Fourth Proportional to 192,715.60, 289,030.20 and 126,619.60

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Solution

The fourth proportional to 192,715.60, 289,030.20 and 126,619.60 is: 189,901.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,715.60 : 289,030.20 = 126,619.60 : x
  2. Step 2: Convert to fraction form
    192,715.60/289,030.20 = 126,619.60/x
  3. Step 3: Cross multiply
    192,715.60x = 289,030.20 × 126,619.60
  4. Step 4: Simplify right side
    192,715.60x = 36,596,888,311.92
  5. Step 5: Solve for x
    x = 36,596,888,311.92/192,715.60
  6. Step 6: Final answer
    x = 189,901.02

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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.