Home / 190,138.40-262,390.55-113,653.78

Finding the Fourth Proportional to 190,138.40, 262,390.55 and 113,653.78

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Solution

The fourth proportional to 190,138.40, 262,390.55 and 113,653.78 is: 156,841.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,138.40 : 262,390.55 = 113,653.78 : x
  2. Step 2: Convert to fraction form
    190,138.40/262,390.55 = 113,653.78/x
  3. Step 3: Cross multiply
    190,138.40x = 262,390.55 × 113,653.78
  4. Step 4: Simplify right side
    190,138.40x = 29,821,678,415.13
  5. Step 5: Solve for x
    x = 29,821,678,415.13/190,138.40
  6. Step 6: Final answer
    x = 156,841.96

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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.