Home / 203,560.30-305,340.45-85,365.10

Finding the Fourth Proportional to 203,560.30, 305,340.45 and 85,365.10

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Solution

The fourth proportional to 203,560.30, 305,340.45 and 85,365.10 is: 128,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,560.30 : 305,340.45 = 85,365.10 : x
  2. Step 2: Convert to fraction form
    203,560.30/305,340.45 = 85,365.10/x
  3. Step 3: Cross multiply
    203,560.30x = 305,340.45 × 85,365.10
  4. Step 4: Simplify right side
    203,560.30x = 26,065,418,048.30
  5. Step 5: Solve for x
    x = 26,065,418,048.30/203,560.30
  6. Step 6: Final answer
    x = 128,047.65

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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.