Home / 128,387,993,549.36-192,414,461,233.33-71,725,567,792.86

Finding the Fourth Proportional to 128,387,993,549.36, 192,414,461,233.33 and 71,725,567,792.86

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Solution

The fourth proportional to 128,387,993,549.36, 192,414,461,233.33 and 71,725,567,792.86 is: 107,494,759,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,387,993,549.36 : 192,414,461,233.33 = 71,725,567,792.86 : x
  2. Step 2: Convert to fraction form
    128,387,993,549.36/192,414,461,233.33 = 71,725,567,792.86/x
  3. Step 3: Cross multiply
    128,387,993,549.36x = 192,414,461,233.33 × 71,725,567,792.86
  4. Step 4: Simplify right side
    128,387,993,549.36x = 13,801,036,483,517,841,670,144
  5. Step 5: Solve for x
    x = 13,801,036,483,517,841,670,144/128,387,993,549.36
  6. Step 6: Final answer
    x = 107,494,759,455.15

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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.