Home / 198,933.03-298,290.47-78,868.35

Finding the Fourth Proportional to 198,933.03, 298,290.47 and 78,868.35

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Solution

The fourth proportional to 198,933.03, 298,290.47 and 78,868.35 is: 118,259.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,933.03 : 298,290.47 = 78,868.35 : x
  2. Step 2: Convert to fraction form
    198,933.03/298,290.47 = 78,868.35/x
  3. Step 3: Cross multiply
    198,933.03x = 298,290.47 × 78,868.35
  4. Step 4: Simplify right side
    198,933.03x = 23,525,675,698.17
  5. Step 5: Solve for x
    x = 23,525,675,698.17/198,933.03
  6. Step 6: Final answer
    x = 118,259.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.