Home / 100,020.04-138,032.70-57,584.68

Finding the Fourth Proportional to 100,020.04, 138,032.70 and 57,584.68

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Solution

The fourth proportional to 100,020.04, 138,032.70 and 57,584.68 is: 79,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,020.04 : 138,032.70 = 57,584.68 : x
  2. Step 2: Convert to fraction form
    100,020.04/138,032.70 = 57,584.68/x
  3. Step 3: Cross multiply
    100,020.04x = 138,032.70 × 57,584.68
  4. Step 4: Simplify right side
    100,020.04x = 7,948,568,859.04
  5. Step 5: Solve for x
    x = 7,948,568,859.04/100,020.04
  6. Step 6: Final answer
    x = 79,469.76

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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.