Home / 199,391.10-275,004.12-127,777.78

Finding the Fourth Proportional to 199,391.10, 275,004.12 and 127,777.78

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Solution

The fourth proportional to 199,391.10, 275,004.12 and 127,777.78 is: 176,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,391.10 : 275,004.12 = 127,777.78 : x
  2. Step 2: Convert to fraction form
    199,391.10/275,004.12 = 127,777.78/x
  3. Step 3: Cross multiply
    199,391.10x = 275,004.12 × 127,777.78
  4. Step 4: Simplify right side
    199,391.10x = 35,139,415,944.45
  5. Step 5: Solve for x
    x = 35,139,415,944.45/199,391.10
  6. Step 6: Final answer
    x = 176,233.62

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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.