Home / 189,716.72-261,805.88-103,673.80

Finding the Fourth Proportional to 189,716.72, 261,805.88 and 103,673.80

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Solution

The fourth proportional to 189,716.72, 261,805.88 and 103,673.80 is: 143,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,716.72 : 261,805.88 = 103,673.80 : x
  2. Step 2: Convert to fraction form
    189,716.72/261,805.88 = 103,673.80/x
  3. Step 3: Cross multiply
    189,716.72x = 261,805.88 × 103,673.80
  4. Step 4: Simplify right side
    189,716.72x = 27,142,410,441.94
  5. Step 5: Solve for x
    x = 27,142,410,441.94/189,716.72
  6. Step 6: Final answer
    x = 143,068.10

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1.5x scale

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.