Home / 206,012,692.31-309,019,149.43-76,603,487.40

Finding the Fourth Proportional to 206,012,692.31, 309,019,149.43 and 76,603,487.40

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Solution

The fourth proportional to 206,012,692.31, 309,019,149.43 and 76,603,487.40 is: 114,905,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,012,692.31 : 309,019,149.43 = 76,603,487.40 : x
  2. Step 2: Convert to fraction form
    206,012,692.31/309,019,149.43 = 76,603,487.40/x
  3. Step 3: Cross multiply
    206,012,692.31x = 309,019,149.43 × 76,603,487.40
  4. Step 4: Simplify right side
    206,012,692.31x = 23,671,944,519,528,216
  5. Step 5: Solve for x
    x = 23,671,944,519,528,216/206,012,692.31
  6. Step 6: Final answer
    x = 114,905,272.36

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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.