Home / 189,856.43-261,999-103,815.69

Finding the Fourth Proportional to 189,856.43, 261,999 and 103,815.69

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Solution

The fourth proportional to 189,856.43, 261,999 and 103,815.69 is: 143,264.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,856.43 : 261,999 = 103,815.69 : x
  2. Step 2: Convert to fraction form
    189,856.43/261,999 = 103,815.69/x
  3. Step 3: Cross multiply
    189,856.43x = 261,999 × 103,815.69
  4. Step 4: Simplify right side
    189,856.43x = 27,199,606,964.31
  5. Step 5: Solve for x
    x = 27,199,606,964.31/189,856.43
  6. Step 6: Final answer
    x = 143,264.08

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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.