Home / 209,890,916.20-314,969,084.70-123,629,156.20

Finding the Fourth Proportional to 209,890,916.20, 314,969,084.70 and 123,629,156.20

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Solution

The fourth proportional to 209,890,916.20, 314,969,084.70 and 123,629,156.20 is: 185,521,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,890,916.20 : 314,969,084.70 = 123,629,156.20 : x
  2. Step 2: Convert to fraction form
    209,890,916.20/314,969,084.70 = 123,629,156.20/x
  3. Step 3: Cross multiply
    209,890,916.20x = 314,969,084.70 × 123,629,156.20
  4. Step 4: Simplify right side
    209,890,916.20x = 38,939,362,170,547,328
  5. Step 5: Solve for x
    x = 38,939,362,170,547,328/209,890,916.20
  6. Step 6: Final answer
    x = 185,521,902.88

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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.