Home / 139,243.20-192,156.58-75,580.98

Finding the Fourth Proportional to 139,243.20, 192,156.58 and 75,580.98

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Solution

The fourth proportional to 139,243.20, 192,156.58 and 75,580.98 is: 104,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,243.20 : 192,156.58 = 75,580.98 : x
  2. Step 2: Convert to fraction form
    139,243.20/192,156.58 = 75,580.98/x
  3. Step 3: Cross multiply
    139,243.20x = 192,156.58 × 75,580.98
  4. Step 4: Simplify right side
    139,243.20x = 14,523,382,629.85
  5. Step 5: Solve for x
    x = 14,523,382,629.85/139,243.20
  6. Step 6: Final answer
    x = 104,302.28

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1.5x scale

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.