Home / 121,318,412.60-181,977,618.90-80,503,743.80

Finding the Fourth Proportional to 121,318,412.60, 181,977,618.90 and 80,503,743.80

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Solution

The fourth proportional to 121,318,412.60, 181,977,618.90 and 80,503,743.80 is: 120,755,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,318,412.60 : 181,977,618.90 = 80,503,743.80 : x
  2. Step 2: Convert to fraction form
    121,318,412.60/181,977,618.90 = 80,503,743.80/x
  3. Step 3: Cross multiply
    121,318,412.60x = 181,977,618.90 × 80,503,743.80
  4. Step 4: Simplify right side
    121,318,412.60x = 14,649,879,609,259,638
  5. Step 5: Solve for x
    x = 14,649,879,609,259,638/121,318,412.60
  6. Step 6: Final answer
    x = 120,755,615.70

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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.