Home / 128,149,711.20-192,177,327.60-63,432,007.20

Finding the Fourth Proportional to 128,149,711.20, 192,177,327.60 and 63,432,007.20

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Solution

The fourth proportional to 128,149,711.20, 192,177,327.60 and 63,432,007.20 is: 95,124,628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,149,711.20 : 192,177,327.60 = 63,432,007.20 : x
  2. Step 2: Convert to fraction form
    128,149,711.20/192,177,327.60 = 63,432,007.20/x
  3. Step 3: Cross multiply
    128,149,711.20x = 192,177,327.60 × 63,432,007.20
  4. Step 4: Simplify right side
    128,149,711.20x = 12,190,193,627,999,958
  5. Step 5: Solve for x
    x = 12,190,193,627,999,958/128,149,711.20
  6. Step 6: Final answer
    x = 95,124,628.17

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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.