Home / 189,998.78-262,196.37-105,116.45

Finding the Fourth Proportional to 189,998.78, 262,196.37 and 105,116.45

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Solution

The fourth proportional to 189,998.78, 262,196.37 and 105,116.45 is: 145,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,998.78 : 262,196.37 = 105,116.45 : x
  2. Step 2: Convert to fraction form
    189,998.78/262,196.37 = 105,116.45/x
  3. Step 3: Cross multiply
    189,998.78x = 262,196.37 × 105,116.45
  4. Step 4: Simplify right side
    189,998.78x = 27,561,149,780.72
  5. Step 5: Solve for x
    x = 27,561,149,780.72/189,998.78
  6. Step 6: Final answer
    x = 145,059.62

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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.