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Finding the Fourth Proportional to 193,485.66, 290,173.41 and 75,131.70

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Solution

The fourth proportional to 193,485.66, 290,173.41 and 75,131.70 is: 112,676.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,485.66 : 290,173.41 = 75,131.70 : x
  2. Step 2: Convert to fraction form
    193,485.66/290,173.41 = 75,131.70/x
  3. Step 3: Cross multiply
    193,485.66x = 290,173.41 × 75,131.70
  4. Step 4: Simplify right side
    193,485.66x = 21,801,221,588.10
  5. Step 5: Solve for x
    x = 21,801,221,588.10/193,485.66
  6. Step 6: Final answer
    x = 112,676.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.