Home / 206,487,051.82-309,617,368.21-81,863,431.56

Finding the Fourth Proportional to 206,487,051.82, 309,617,368.21 and 81,863,431.56

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Solution

The fourth proportional to 206,487,051.82, 309,617,368.21 and 81,863,431.56 is: 122,750,264.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,487,051.82 : 309,617,368.21 = 81,863,431.56 : x
  2. Step 2: Convert to fraction form
    206,487,051.82/309,617,368.21 = 81,863,431.56/x
  3. Step 3: Cross multiply
    206,487,051.82x = 309,617,368.21 × 81,863,431.56
  4. Step 4: Simplify right side
    206,487,051.82x = 25,346,340,231,131,124
  5. Step 5: Solve for x
    x = 25,346,340,231,131,124/206,487,051.82
  6. Step 6: Final answer
    x = 122,750,264.52

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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.