Home / 189,737.06-261,837.96-103,697.78

Finding the Fourth Proportional to 189,737.06, 261,837.96 and 103,697.78

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Solution

The fourth proportional to 189,737.06, 261,837.96 and 103,697.78 is: 143,103.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,737.06 : 261,837.96 = 103,697.78 : x
  2. Step 2: Convert to fraction form
    189,737.06/261,837.96 = 103,697.78/x
  3. Step 3: Cross multiply
    189,737.06x = 261,837.96 × 103,697.78
  4. Step 4: Simplify right side
    189,737.06x = 27,152,015,171.73
  5. Step 5: Solve for x
    x = 27,152,015,171.73/189,737.06
  6. Step 6: Final answer
    x = 143,103.38

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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.