Home / 193,485.75-290,206.72-67,102.66

Finding the Fourth Proportional to 193,485.75, 290,206.72 and 67,102.66

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Solution

The fourth proportional to 193,485.75, 290,206.72 and 67,102.66 is: 100,646.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,485.75 : 290,206.72 = 67,102.66 : x
  2. Step 2: Convert to fraction form
    193,485.75/290,206.72 = 67,102.66/x
  3. Step 3: Cross multiply
    193,485.75x = 290,206.72 × 67,102.66
  4. Step 4: Simplify right side
    193,485.75x = 19,473,642,861.88
  5. Step 5: Solve for x
    x = 19,473,642,861.88/193,485.75
  6. Step 6: Final answer
    x = 100,646.39

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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.