Home / 199,893.02-275,825.70-128,369.92

Finding the Fourth Proportional to 199,893.02, 275,825.70 and 128,369.92

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Solution

The fourth proportional to 199,893.02, 275,825.70 and 128,369.92 is: 177,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,893.02 : 275,825.70 = 128,369.92 : x
  2. Step 2: Convert to fraction form
    199,893.02/275,825.70 = 128,369.92/x
  3. Step 3: Cross multiply
    199,893.02x = 275,825.70 × 128,369.92
  4. Step 4: Simplify right side
    199,893.02x = 35,407,723,042.94
  5. Step 5: Solve for x
    x = 35,407,723,042.94/199,893.02
  6. Step 6: Final answer
    x = 177,133.36

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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.