Home / 128,178,609.20-192,267,916.24-31,133,662.92

Finding the Fourth Proportional to 128,178,609.20, 192,267,916.24 and 31,133,662.92

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Solution

The fourth proportional to 128,178,609.20, 192,267,916.24 and 31,133,662.92 is: 46,700,494.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,178,609.20 : 192,267,916.24 = 31,133,662.92 : x
  2. Step 2: Convert to fraction form
    128,178,609.20/192,267,916.24 = 31,133,662.92/x
  3. Step 3: Cross multiply
    128,178,609.20x = 192,267,916.24 × 31,133,662.92
  4. Step 4: Simplify right side
    128,178,609.20x = 5,986,004,494,546,954
  5. Step 5: Solve for x
    x = 5,986,004,494,546,954/128,178,609.20
  6. Step 6: Final answer
    x = 46,700,494.97

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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.