Home / 69,119.23-103,686.20-19,199.42

Finding the Fourth Proportional to 69,119.23, 103,686.20 and 19,199.42

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Solution

The fourth proportional to 69,119.23, 103,686.20 and 19,199.42 is: 28,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,119.23 : 103,686.20 = 19,199.42 : x
  2. Step 2: Convert to fraction form
    69,119.23/103,686.20 = 19,199.42/x
  3. Step 3: Cross multiply
    69,119.23x = 103,686.20 × 19,199.42
  4. Step 4: Simplify right side
    69,119.23x = 1,990,714,806.01
  5. Step 5: Solve for x
    x = 1,990,714,806.01/69,119.23
  6. Step 6: Final answer
    x = 28,801.17

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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.