Home / 139,063,999.20-208,595,998.80-138,056,229.60

Finding the Fourth Proportional to 139,063,999.20, 208,595,998.80 and 138,056,229.60

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Solution

The fourth proportional to 139,063,999.20, 208,595,998.80 and 138,056,229.60 is: 207,084,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063,999.20 : 208,595,998.80 = 138,056,229.60 : x
  2. Step 2: Convert to fraction form
    139,063,999.20/208,595,998.80 = 138,056,229.60/x
  3. Step 3: Cross multiply
    139,063,999.20x = 208,595,998.80 × 138,056,229.60
  4. Step 4: Simplify right side
    139,063,999.20x = 28,797,977,103,974,124
  5. Step 5: Solve for x
    x = 28,797,977,103,974,124/139,063,999.20
  6. Step 6: Final answer
    x = 207,084,344.40

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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.