Home / 206,487,055.85-309,617,374.22-81,863,435.57

Finding the Fourth Proportional to 206,487,055.85, 309,617,374.22 and 81,863,435.57

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Solution

The fourth proportional to 206,487,055.85, 309,617,374.22 and 81,863,435.57 is: 122,750,270.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,487,055.85 : 309,617,374.22 = 81,863,435.57 : x
  2. Step 2: Convert to fraction form
    206,487,055.85/309,617,374.22 = 81,863,435.57/x
  3. Step 3: Cross multiply
    206,487,055.85x = 309,617,374.22 × 81,863,435.57
  4. Step 4: Simplify right side
    206,487,055.85x = 25,346,341,963,854,144
  5. Step 5: Solve for x
    x = 25,346,341,963,854,144/206,487,055.85
  6. Step 6: Final answer
    x = 122,750,270.52

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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.