Home / 143,855,999.80-215,783,999.70-86,413,132.60

Finding the Fourth Proportional to 143,855,999.80, 215,783,999.70 and 86,413,132.60

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Solution

The fourth proportional to 143,855,999.80, 215,783,999.70 and 86,413,132.60 is: 129,619,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,855,999.80 : 215,783,999.70 = 86,413,132.60 : x
  2. Step 2: Convert to fraction form
    143,855,999.80/215,783,999.70 = 86,413,132.60/x
  3. Step 3: Cross multiply
    143,855,999.80x = 215,783,999.70 × 86,413,132.60
  4. Step 4: Simplify right side
    143,855,999.80x = 18,646,571,379,034,456
  5. Step 5: Solve for x
    x = 18,646,571,379,034,456/143,855,999.80
  6. Step 6: Final answer
    x = 129,619,698.90

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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.