Home / 139,790.07-192,912.48-76,127.79

Finding the Fourth Proportional to 139,790.07, 192,912.48 and 76,127.79

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Solution

The fourth proportional to 139,790.07, 192,912.48 and 76,127.79 is: 105,057.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,790.07 : 192,912.48 = 76,127.79 : x
  2. Step 2: Convert to fraction form
    139,790.07/192,912.48 = 76,127.79/x
  3. Step 3: Cross multiply
    139,790.07x = 192,912.48 × 76,127.79
  4. Step 4: Simplify right side
    139,790.07x = 14,686,000,765.82
  5. Step 5: Solve for x
    x = 14,686,000,765.82/139,790.07
  6. Step 6: Final answer
    x = 105,057.54

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1.5x scale

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.