Home / 139,634-192,693.84-75,971.60

Finding the Fourth Proportional to 139,634, 192,693.84 and 75,971.60

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Solution

The fourth proportional to 139,634, 192,693.84 and 75,971.60 is: 104,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,634 : 192,693.84 = 75,971.60 : x
  2. Step 2: Convert to fraction form
    139,634/192,693.84 = 75,971.60/x
  3. Step 3: Cross multiply
    139,634x = 192,693.84 × 75,971.60
  4. Step 4: Simplify right side
    139,634x = 14,639,259,334.94
  5. Step 5: Solve for x
    x = 14,639,259,334.94/139,634
  6. Step 6: Final answer
    x = 104,840.22

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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.