Home / 206,792,212.80-309,763,166.40-142,168,987.20

Finding the Fourth Proportional to 206,792,212.80, 309,763,166.40 and 142,168,987.20

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Solution

The fourth proportional to 206,792,212.80, 309,763,166.40 and 142,168,987.20 is: 212,961,189.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,792,212.80 : 309,763,166.40 = 142,168,987.20 : x
  2. Step 2: Convert to fraction form
    206,792,212.80/309,763,166.40 = 142,168,987.20/x
  3. Step 3: Cross multiply
    206,792,212.80x = 309,763,166.40 × 142,168,987.20
  4. Step 4: Simplify right side
    206,792,212.80x = 44,038,715,638,953,064
  5. Step 5: Solve for x
    x = 44,038,715,638,953,064/206,792,212.80
  6. Step 6: Final answer
    x = 212,961,189.61

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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.