Home / 128,647,029.60-192,970,544.40-120,143,973.60

Finding the Fourth Proportional to 128,647,029.60, 192,970,544.40 and 120,143,973.60

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Solution

The fourth proportional to 128,647,029.60, 192,970,544.40 and 120,143,973.60 is: 180,215,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,647,029.60 : 192,970,544.40 = 120,143,973.60 : x
  2. Step 2: Convert to fraction form
    128,647,029.60/192,970,544.40 = 120,143,973.60/x
  3. Step 3: Cross multiply
    128,647,029.60x = 192,970,544.40 × 120,143,973.60
  4. Step 4: Simplify right side
    128,647,029.60x = 23,184,247,991,971,228
  5. Step 5: Solve for x
    x = 23,184,247,991,971,228/128,647,029.60
  6. Step 6: Final answer
    x = 180,215,960.40

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1.5x scale

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.