Home / 168,490,858.40-252,736,287.60-137,879,856.80

Finding the Fourth Proportional to 168,490,858.40, 252,736,287.60 and 137,879,856.80

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Solution

The fourth proportional to 168,490,858.40, 252,736,287.60 and 137,879,856.80 is: 206,819,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,490,858.40 : 252,736,287.60 = 137,879,856.80 : x
  2. Step 2: Convert to fraction form
    168,490,858.40/252,736,287.60 = 137,879,856.80/x
  3. Step 3: Cross multiply
    168,490,858.40x = 252,736,287.60 × 137,879,856.80
  4. Step 4: Simplify right side
    168,490,858.40x = 34,847,243,142,451,616
  5. Step 5: Solve for x
    x = 34,847,243,142,451,616/168,490,858.40
  6. Step 6: Final answer
    x = 206,819,785.20

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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.