Home / 199,290,721.40-298,936,082.10-121,806,623.60

Finding the Fourth Proportional to 199,290,721.40, 298,936,082.10 and 121,806,623.60

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Solution

The fourth proportional to 199,290,721.40, 298,936,082.10 and 121,806,623.60 is: 182,709,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,290,721.40 : 298,936,082.10 = 121,806,623.60 : x
  2. Step 2: Convert to fraction form
    199,290,721.40/298,936,082.10 = 121,806,623.60/x
  3. Step 3: Cross multiply
    199,290,721.40x = 298,936,082.10 × 121,806,623.60
  4. Step 4: Simplify right side
    199,290,721.40x = 36,412,394,832,813,400
  5. Step 5: Solve for x
    x = 36,412,394,832,813,400/199,290,721.40
  6. Step 6: Final answer
    x = 182,709,935.40

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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.