Home / 139,326.44-192,272.78-78,895.50

Finding the Fourth Proportional to 139,326.44, 192,272.78 and 78,895.50

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Solution

The fourth proportional to 139,326.44, 192,272.78 and 78,895.50 is: 108,877.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,326.44 : 192,272.78 = 78,895.50 : x
  2. Step 2: Convert to fraction form
    139,326.44/192,272.78 = 78,895.50/x
  3. Step 3: Cross multiply
    139,326.44x = 192,272.78 × 78,895.50
  4. Step 4: Simplify right side
    139,326.44x = 15,169,457,114.49
  5. Step 5: Solve for x
    x = 15,169,457,114.49/139,326.44
  6. Step 6: Final answer
    x = 108,877.09

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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.