Home / 220,105.81-330,290.07-79,875.37

Finding the Fourth Proportional to 220,105.81, 330,290.07 and 79,875.37

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Solution

The fourth proportional to 220,105.81, 330,290.07 and 79,875.37 is: 119,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,105.81 : 330,290.07 = 79,875.37 : x
  2. Step 2: Convert to fraction form
    220,105.81/330,290.07 = 79,875.37/x
  3. Step 3: Cross multiply
    220,105.81x = 330,290.07 × 79,875.37
  4. Step 4: Simplify right side
    220,105.81x = 26,382,041,548.58
  5. Step 5: Solve for x
    x = 26,382,041,548.58/220,105.81
  6. Step 6: Final answer
    x = 119,860.72

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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.