Home / 209,113.76-288,578.18-123,075.97

Finding the Fourth Proportional to 209,113.76, 288,578.18 and 123,075.97

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Solution

The fourth proportional to 209,113.76, 288,578.18 and 123,075.97 is: 169,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,113.76 : 288,578.18 = 123,075.97 : x
  2. Step 2: Convert to fraction form
    209,113.76/288,578.18 = 123,075.97/x
  3. Step 3: Cross multiply
    209,113.76x = 288,578.18 × 123,075.97
  4. Step 4: Simplify right side
    209,113.76x = 35,517,039,424.33
  5. Step 5: Solve for x
    x = 35,517,039,424.33/209,113.76
  6. Step 6: Final answer
    x = 169,845.54

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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.