Home / 189,379.63-261,438.51-117,782.74

Finding the Fourth Proportional to 189,379.63, 261,438.51 and 117,782.74

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Solution

The fourth proportional to 189,379.63, 261,438.51 and 117,782.74 is: 162,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,379.63 : 261,438.51 = 117,782.74 : x
  2. Step 2: Convert to fraction form
    189,379.63/261,438.51 = 117,782.74/x
  3. Step 3: Cross multiply
    189,379.63x = 261,438.51 × 117,782.74
  4. Step 4: Simplify right side
    189,379.63x = 30,792,944,049.32
  5. Step 5: Solve for x
    x = 30,792,944,049.32/189,379.63
  6. Step 6: Final answer
    x = 162,599.03

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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.