Home / 128,849,039.20-193,147,587.60-115,244,149.60

Finding the Fourth Proportional to 128,849,039.20, 193,147,587.60 and 115,244,149.60

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Solution

The fourth proportional to 128,849,039.20, 193,147,587.60 and 115,244,149.60 is: 172,753,554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,849,039.20 : 193,147,587.60 = 115,244,149.60 : x
  2. Step 2: Convert to fraction form
    128,849,039.20/193,147,587.60 = 115,244,149.60/x
  3. Step 3: Cross multiply
    128,849,039.20x = 193,147,587.60 × 115,244,149.60
  4. Step 4: Simplify right side
    128,849,039.20x = 22,259,129,480,253,504
  5. Step 5: Solve for x
    x = 22,259,129,480,253,504/128,849,039.20
  6. Step 6: Final answer
    x = 172,753,554.22

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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.