Home / 127,821,404.80-191,620,132.80-76,723,753.60

Finding the Fourth Proportional to 127,821,404.80, 191,620,132.80 and 76,723,753.60

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Solution

The fourth proportional to 127,821,404.80, 191,620,132.80 and 76,723,753.60 is: 115,018,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,821,404.80 : 191,620,132.80 = 76,723,753.60 : x
  2. Step 2: Convert to fraction form
    127,821,404.80/191,620,132.80 = 76,723,753.60/x
  3. Step 3: Cross multiply
    127,821,404.80x = 191,620,132.80 × 76,723,753.60
  4. Step 4: Simplify right side
    127,821,404.80x = 14,701,815,853,746,478
  5. Step 5: Solve for x
    x = 14,701,815,853,746,478/127,821,404.80
  6. Step 6: Final answer
    x = 115,018,418.68

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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.