Home / 139,868.20-193,020.33-76,205.98

Finding the Fourth Proportional to 139,868.20, 193,020.33 and 76,205.98

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Solution

The fourth proportional to 139,868.20, 193,020.33 and 76,205.98 is: 105,165.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,868.20 : 193,020.33 = 76,205.98 : x
  2. Step 2: Convert to fraction form
    139,868.20/193,020.33 = 76,205.98/x
  3. Step 3: Cross multiply
    139,868.20x = 193,020.33 × 76,205.98
  4. Step 4: Simplify right side
    139,868.20x = 14,709,303,407.57
  5. Step 5: Solve for x
    x = 14,709,303,407.57/139,868.20
  6. Step 6: Final answer
    x = 105,165.46

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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.