Home / 139,218.18-192,121.19-75,555.98

Finding the Fourth Proportional to 139,218.18, 192,121.19 and 75,555.98

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Solution

The fourth proportional to 139,218.18, 192,121.19 and 75,555.98 is: 104,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,218.18 : 192,121.19 = 75,555.98 : x
  2. Step 2: Convert to fraction form
    139,218.18/192,121.19 = 75,555.98/x
  3. Step 3: Cross multiply
    139,218.18x = 192,121.19 × 75,555.98
  4. Step 4: Simplify right side
    139,218.18x = 14,515,903,450.83
  5. Step 5: Solve for x
    x = 14,515,903,450.83/139,218.18
  6. Step 6: Final answer
    x = 104,267.30

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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.