Home / 84,200,420.80-126,300,631.20-73,786,801.60

Finding the Fourth Proportional to 84,200,420.80, 126,300,631.20 and 73,786,801.60

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Solution

The fourth proportional to 84,200,420.80, 126,300,631.20 and 73,786,801.60 is: 110,680,202.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,200,420.80 : 126,300,631.20 = 73,786,801.60 : x
  2. Step 2: Convert to fraction form
    84,200,420.80/126,300,631.20 = 73,786,801.60/x
  3. Step 3: Cross multiply
    84,200,420.80x = 126,300,631.20 × 73,786,801.60
  4. Step 4: Simplify right side
    84,200,420.80x = 9,319,319,616,309,170
  5. Step 5: Solve for x
    x = 9,319,319,616,309,170/84,200,420.80
  6. Step 6: Final answer
    x = 110,680,202.40

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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.