Home / 128,664,400.05-192,996,600.08-115,059,510.45

Finding the Fourth Proportional to 128,664,400.05, 192,996,600.08 and 115,059,510.45

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Solution

The fourth proportional to 128,664,400.05, 192,996,600.08 and 115,059,510.45 is: 172,589,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,664,400.05 : 192,996,600.08 = 115,059,510.45 : x
  2. Step 2: Convert to fraction form
    128,664,400.05/192,996,600.08 = 115,059,510.45/x
  3. Step 3: Cross multiply
    128,664,400.05x = 192,996,600.08 × 115,059,510.45
  4. Step 4: Simplify right side
    128,664,400.05x = 22,206,094,323,143,932
  5. Step 5: Solve for x
    x = 22,206,094,323,143,932/128,664,400.05
  6. Step 6: Final answer
    x = 172,589,265.68

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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.