Home / 137,020.50-189,064.09-76,571.82

Finding the Fourth Proportional to 137,020.50, 189,064.09 and 76,571.82

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Solution

The fourth proportional to 137,020.50, 189,064.09 and 76,571.82 is: 105,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,020.50 : 189,064.09 = 76,571.82 : x
  2. Step 2: Convert to fraction form
    137,020.50/189,064.09 = 76,571.82/x
  3. Step 3: Cross multiply
    137,020.50x = 189,064.09 × 76,571.82
  4. Step 4: Simplify right side
    137,020.50x = 14,476,981,467.94
  5. Step 5: Solve for x
    x = 14,476,981,467.94/137,020.50
  6. Step 6: Final answer
    x = 105,655.59

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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.