Home / 128,826,943.20-193,114,443.60-115,222,053.60

Finding the Fourth Proportional to 128,826,943.20, 193,114,443.60 and 115,222,053.60

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Solution

The fourth proportional to 128,826,943.20, 193,114,443.60 and 115,222,053.60 is: 172,720,412.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,826,943.20 : 193,114,443.60 = 115,222,053.60 : x
  2. Step 2: Convert to fraction form
    128,826,943.20/193,114,443.60 = 115,222,053.60/x
  3. Step 3: Cross multiply
    128,826,943.20x = 193,114,443.60 × 115,222,053.60
  4. Step 4: Simplify right side
    128,826,943.20x = 22,251,042,771,413,376
  5. Step 5: Solve for x
    x = 22,251,042,771,413,376/128,826,943.20
  6. Step 6: Final answer
    x = 172,720,412.51

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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.