Home / 213,092,220.80-319,638,331.20-76,782,051.20

Finding the Fourth Proportional to 213,092,220.80, 319,638,331.20 and 76,782,051.20

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Solution

The fourth proportional to 213,092,220.80, 319,638,331.20 and 76,782,051.20 is: 115,173,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,092,220.80 : 319,638,331.20 = 76,782,051.20 : x
  2. Step 2: Convert to fraction form
    213,092,220.80/319,638,331.20 = 76,782,051.20/x
  3. Step 3: Cross multiply
    213,092,220.80x = 319,638,331.20 × 76,782,051.20
  4. Step 4: Simplify right side
    213,092,220.80x = 24,542,486,711,680,956
  5. Step 5: Solve for x
    x = 24,542,486,711,680,956/213,092,220.80
  6. Step 6: Final answer
    x = 115,173,076.80

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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.