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Finding the Fourth Proportional to 162,932,647.80, 244,682,406.90 and 86,405,143.80

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Solution

The fourth proportional to 162,932,647.80, 244,682,406.90 and 86,405,143.80 is: 129,758,024.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,932,647.80 : 244,682,406.90 = 86,405,143.80 : x
  2. Step 2: Convert to fraction form
    162,932,647.80/244,682,406.90 = 86,405,143.80/x
  3. Step 3: Cross multiply
    162,932,647.80x = 244,682,406.90 × 86,405,143.80
  4. Step 4: Simplify right side
    162,932,647.80x = 21,141,818,553,524,612
  5. Step 5: Solve for x
    x = 21,141,818,553,524,612/162,932,647.80
  6. Step 6: Final answer
    x = 129,758,024.80

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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.