Home / 189,381.64-261,441.28-117,784.74

Finding the Fourth Proportional to 189,381.64, 261,441.28 and 117,784.74

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Solution

The fourth proportional to 189,381.64, 261,441.28 and 117,784.74 is: 162,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,381.64 : 261,441.28 = 117,784.74 : x
  2. Step 2: Convert to fraction form
    189,381.64/261,441.28 = 117,784.74/x
  3. Step 3: Cross multiply
    189,381.64x = 261,441.28 × 117,784.74
  4. Step 4: Simplify right side
    189,381.64x = 30,793,793,190.07
  5. Step 5: Solve for x
    x = 30,793,793,190.07/189,381.64
  6. Step 6: Final answer
    x = 162,601.79

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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.