Home / 138,711,170.88-191,419,021.44-76,830,181.20

Finding the Fourth Proportional to 138,711,170.88, 191,419,021.44 and 76,830,181.20

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Solution

The fourth proportional to 138,711,170.88, 191,419,021.44 and 76,830,181.20 is: 106,024,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,711,170.88 : 191,419,021.44 = 76,830,181.20 : x
  2. Step 2: Convert to fraction form
    138,711,170.88/191,419,021.44 = 76,830,181.20/x
  3. Step 3: Cross multiply
    138,711,170.88x = 191,419,021.44 × 76,830,181.20
  4. Step 4: Simplify right side
    138,711,170.88x = 14,706,758,102,361,886
  5. Step 5: Solve for x
    x = 14,706,758,102,361,886/138,711,170.88
  6. Step 6: Final answer
    x = 106,024,323.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.