Home / 199,889.02-275,820.19-128,365.92

Finding the Fourth Proportional to 199,889.02, 275,820.19 and 128,365.92

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Solution

The fourth proportional to 199,889.02, 275,820.19 and 128,365.92 is: 177,127.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,889.02 : 275,820.19 = 128,365.92 : x
  2. Step 2: Convert to fraction form
    199,889.02/275,820.19 = 128,365.92/x
  3. Step 3: Cross multiply
    199,889.02x = 275,820.19 × 128,365.92
  4. Step 4: Simplify right side
    199,889.02x = 35,405,912,443.92
  5. Step 5: Solve for x
    x = 35,405,912,443.92/199,889.02
  6. Step 6: Final answer
    x = 177,127.85

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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.