Home / 209,623.70-289,276.16-122,423.80

Finding the Fourth Proportional to 209,623.70, 289,276.16 and 122,423.80

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Solution

The fourth proportional to 209,623.70, 289,276.16 and 122,423.80 is: 168,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,623.70 : 289,276.16 = 122,423.80 : x
  2. Step 2: Convert to fraction form
    209,623.70/289,276.16 = 122,423.80/x
  3. Step 3: Cross multiply
    209,623.70x = 289,276.16 × 122,423.80
  4. Step 4: Simplify right side
    209,623.70x = 35,414,286,756.61
  5. Step 5: Solve for x
    x = 35,414,286,756.61/209,623.70
  6. Step 6: Final answer
    x = 168,942.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.