Home / 258,052,001.40-387,111,179.70-128,725,716.60

Finding the Fourth Proportional to 258,052,001.40, 387,111,179.70 and 128,725,716.60

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Solution

The fourth proportional to 258,052,001.40, 387,111,179.70 and 128,725,716.60 is: 193,105,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,052,001.40 : 387,111,179.70 = 128,725,716.60 : x
  2. Step 2: Convert to fraction form
    258,052,001.40/387,111,179.70 = 128,725,716.60/x
  3. Step 3: Cross multiply
    258,052,001.40x = 387,111,179.70 × 128,725,716.60
  4. Step 4: Simplify right side
    258,052,001.40x = 49,831,164,010,753,872
  5. Step 5: Solve for x
    x = 49,831,164,010,753,872/258,052,001.40
  6. Step 6: Final answer
    x = 193,105,125.09

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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.