Home / 172,419,136.20-258,628,704.30-70,130,521.80

Finding the Fourth Proportional to 172,419,136.20, 258,628,704.30 and 70,130,521.80

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Solution

The fourth proportional to 172,419,136.20, 258,628,704.30 and 70,130,521.80 is: 105,195,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,419,136.20 : 258,628,704.30 = 70,130,521.80 : x
  2. Step 2: Convert to fraction form
    172,419,136.20/258,628,704.30 = 70,130,521.80/x
  3. Step 3: Cross multiply
    172,419,136.20x = 258,628,704.30 × 70,130,521.80
  4. Step 4: Simplify right side
    172,419,136.20x = 18,137,765,985,016,904
  5. Step 5: Solve for x
    x = 18,137,765,985,016,904/172,419,136.20
  6. Step 6: Final answer
    x = 105,195,782.70

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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.