Home / 189,768.96-261,878.40-114,359.04

Finding the Fourth Proportional to 189,768.96, 261,878.40 and 114,359.04

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Solution

The fourth proportional to 189,768.96, 261,878.40 and 114,359.04 is: 157,813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,768.96 : 261,878.40 = 114,359.04 : x
  2. Step 2: Convert to fraction form
    189,768.96/261,878.40 = 114,359.04/x
  3. Step 3: Cross multiply
    189,768.96x = 261,878.40 × 114,359.04
  4. Step 4: Simplify right side
    189,768.96x = 29,948,162,420.74
  5. Step 5: Solve for x
    x = 29,948,162,420.74/189,768.96
  6. Step 6: Final answer
    x = 157,813.81

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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.