Home / 128,123,102.40-192,184,653.60-126,928,708.80

Finding the Fourth Proportional to 128,123,102.40, 192,184,653.60 and 126,928,708.80

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Solution

The fourth proportional to 128,123,102.40, 192,184,653.60 and 126,928,708.80 is: 190,393,063.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,123,102.40 : 192,184,653.60 = 126,928,708.80 : x
  2. Step 2: Convert to fraction form
    128,123,102.40/192,184,653.60 = 126,928,708.80/x
  3. Step 3: Cross multiply
    128,123,102.40x = 192,184,653.60 × 126,928,708.80
  4. Step 4: Simplify right side
    128,123,102.40x = 24,393,749,932,623,272
  5. Step 5: Solve for x
    x = 24,393,749,932,623,272/128,123,102.40
  6. Step 6: Final answer
    x = 190,393,063.20

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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.