Home / 139,949.80-193,130.82-76,287.64

Finding the Fourth Proportional to 139,949.80, 193,130.82 and 76,287.64

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Solution

The fourth proportional to 139,949.80, 193,130.82 and 76,287.64 is: 105,277.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,949.80 : 193,130.82 = 76,287.64 : x
  2. Step 2: Convert to fraction form
    139,949.80/193,130.82 = 76,287.64/x
  3. Step 3: Cross multiply
    139,949.80x = 193,130.82 × 76,287.64
  4. Step 4: Simplify right side
    139,949.80x = 14,733,494,469.06
  5. Step 5: Solve for x
    x = 14,733,494,469.06/139,949.80
  6. Step 6: Final answer
    x = 105,277.00

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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.