Home / 128,313,256.40-192,469,884.60-42,030,857.60

Finding the Fourth Proportional to 128,313,256.40, 192,469,884.60 and 42,030,857.60

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Solution

The fourth proportional to 128,313,256.40, 192,469,884.60 and 42,030,857.60 is: 63,046,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,313,256.40 : 192,469,884.60 = 42,030,857.60 : x
  2. Step 2: Convert to fraction form
    128,313,256.40/192,469,884.60 = 42,030,857.60/x
  3. Step 3: Cross multiply
    128,313,256.40x = 192,469,884.60 × 42,030,857.60
  4. Step 4: Simplify right side
    128,313,256.40x = 8,089,674,311,911,033
  5. Step 5: Solve for x
    x = 8,089,674,311,911,033/128,313,256.40
  6. Step 6: Final answer
    x = 63,046,286.40

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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.