Home / 128,329,037.40-192,493,556.10-79,956,096.60

Finding the Fourth Proportional to 128,329,037.40, 192,493,556.10 and 79,956,096.60

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Solution

The fourth proportional to 128,329,037.40, 192,493,556.10 and 79,956,096.60 is: 119,934,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,329,037.40 : 192,493,556.10 = 79,956,096.60 : x
  2. Step 2: Convert to fraction form
    128,329,037.40/192,493,556.10 = 79,956,096.60/x
  3. Step 3: Cross multiply
    128,329,037.40x = 192,493,556.10 × 79,956,096.60
  4. Step 4: Simplify right side
    128,329,037.40x = 15,391,033,366,409,118
  5. Step 5: Solve for x
    x = 15,391,033,366,409,118/128,329,037.40
  6. Step 6: Final answer
    x = 119,934,144.90

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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.