Home / 100,890,120.20-151,335,180.30-28,118,132.60

Finding the Fourth Proportional to 100,890,120.20, 151,335,180.30 and 28,118,132.60

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Solution

The fourth proportional to 100,890,120.20, 151,335,180.30 and 28,118,132.60 is: 42,177,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,890,120.20 : 151,335,180.30 = 28,118,132.60 : x
  2. Step 2: Convert to fraction form
    100,890,120.20/151,335,180.30 = 28,118,132.60/x
  3. Step 3: Cross multiply
    100,890,120.20x = 151,335,180.30 × 28,118,132.60
  4. Step 4: Simplify right side
    100,890,120.20x = 4,255,262,666,720,308.50
  5. Step 5: Solve for x
    x = 4,255,262,666,720,308.50/100,890,120.20
  6. Step 6: Final answer
    x = 42,177,198.90

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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.