Home / 123,409.24-170,321.64-71,020.13

Finding the Fourth Proportional to 123,409.24, 170,321.64 and 71,020.13

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Solution

The fourth proportional to 123,409.24, 170,321.64 and 71,020.13 is: 98,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,409.24 : 170,321.64 = 71,020.13 : x
  2. Step 2: Convert to fraction form
    123,409.24/170,321.64 = 71,020.13/x
  3. Step 3: Cross multiply
    123,409.24x = 170,321.64 × 71,020.13
  4. Step 4: Simplify right side
    123,409.24x = 12,096,263,896.68
  5. Step 5: Solve for x
    x = 12,096,263,896.68/123,409.24
  6. Step 6: Final answer
    x = 98,017.49

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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.