Home / 208,965.53-288,378.15-122,930.57

Finding the Fourth Proportional to 208,965.53, 288,378.15 and 122,930.57

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Solution

The fourth proportional to 208,965.53, 288,378.15 and 122,930.57 is: 169,647.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,965.53 : 288,378.15 = 122,930.57 : x
  2. Step 2: Convert to fraction form
    208,965.53/288,378.15 = 122,930.57/x
  3. Step 3: Cross multiply
    208,965.53x = 288,378.15 × 122,930.57
  4. Step 4: Simplify right side
    208,965.53x = 35,450,490,355.05
  5. Step 5: Solve for x
    x = 35,450,490,355.05/208,965.53
  6. Step 6: Final answer
    x = 169,647.55

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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.