Home / 107,667,999.60-161,501,999.40-78,757,609.20

Finding the Fourth Proportional to 107,667,999.60, 161,501,999.40 and 78,757,609.20

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Solution

The fourth proportional to 107,667,999.60, 161,501,999.40 and 78,757,609.20 is: 118,136,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,667,999.60 : 161,501,999.40 = 78,757,609.20 : x
  2. Step 2: Convert to fraction form
    107,667,999.60/161,501,999.40 = 78,757,609.20/x
  3. Step 3: Cross multiply
    107,667,999.60x = 161,501,999.40 × 78,757,609.20
  4. Step 4: Simplify right side
    107,667,999.60x = 12,719,511,353,763,836
  5. Step 5: Solve for x
    x = 12,719,511,353,763,836/107,667,999.60
  6. Step 6: Final answer
    x = 118,136,413.80

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1.5x scale

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.