Home / 199,912.23-275,852.25-128,389.14

Finding the Fourth Proportional to 199,912.23, 275,852.25 and 128,389.14

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Solution

The fourth proportional to 199,912.23, 275,852.25 and 128,389.14 is: 177,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,912.23 : 275,852.25 = 128,389.14 : x
  2. Step 2: Convert to fraction form
    199,912.23/275,852.25 = 128,389.14/x
  3. Step 3: Cross multiply
    199,912.23x = 275,852.25 × 128,389.14
  4. Step 4: Simplify right side
    199,912.23x = 35,416,433,144.57
  5. Step 5: Solve for x
    x = 35,416,433,144.57/199,912.23
  6. Step 6: Final answer
    x = 177,159.91

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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.