Home / 203,935.52-305,947.05-85,538.63

Finding the Fourth Proportional to 203,935.52, 305,947.05 and 85,538.63

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Solution

The fourth proportional to 203,935.52, 305,947.05 and 85,538.63 is: 128,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,935.52 : 305,947.05 = 85,538.63 : x
  2. Step 2: Convert to fraction form
    203,935.52/305,947.05 = 85,538.63/x
  3. Step 3: Cross multiply
    203,935.52x = 305,947.05 × 85,538.63
  4. Step 4: Simplify right side
    203,935.52x = 26,170,291,509.54
  5. Step 5: Solve for x
    x = 26,170,291,509.54/203,935.52
  6. Step 6: Final answer
    x = 128,326.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.