Home / 80,878,775.60-121,318,163.40-80,374,890.80

Finding the Fourth Proportional to 80,878,775.60, 121,318,163.40 and 80,374,890.80

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Solution

The fourth proportional to 80,878,775.60, 121,318,163.40 and 80,374,890.80 is: 120,562,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,878,775.60 : 121,318,163.40 = 80,374,890.80 : x
  2. Step 2: Convert to fraction form
    80,878,775.60/121,318,163.40 = 80,374,890.80/x
  3. Step 3: Cross multiply
    80,878,775.60x = 121,318,163.40 × 80,374,890.80
  4. Step 4: Simplify right side
    80,878,775.60x = 9,750,934,135,331,556
  5. Step 5: Solve for x
    x = 9,750,934,135,331,556/80,878,775.60
  6. Step 6: Final answer
    x = 120,562,336.20

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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.