Home / 209,890,915.20-314,969,083.20-123,629,155.20

Finding the Fourth Proportional to 209,890,915.20, 314,969,083.20 and 123,629,155.20

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Solution

The fourth proportional to 209,890,915.20, 314,969,083.20 and 123,629,155.20 is: 185,521,901.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,890,915.20 : 314,969,083.20 = 123,629,155.20 : x
  2. Step 2: Convert to fraction form
    209,890,915.20/314,969,083.20 = 123,629,155.20/x
  3. Step 3: Cross multiply
    209,890,915.20x = 314,969,083.20 × 123,629,155.20
  4. Step 4: Simplify right side
    209,890,915.20x = 38,939,361,670,134,512
  5. Step 5: Solve for x
    x = 38,939,361,670,134,512/209,890,915.20
  6. Step 6: Final answer
    x = 185,521,901.38

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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.