Home / 138,306,512.61-190,863,055.62-76,426,851.78

Finding the Fourth Proportional to 138,306,512.61, 190,863,055.62 and 76,426,851.78

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Solution

The fourth proportional to 138,306,512.61, 190,863,055.62 and 76,426,851.78 is: 105,469,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,306,512.61 : 190,863,055.62 = 76,426,851.78 : x
  2. Step 2: Convert to fraction form
    138,306,512.61/190,863,055.62 = 76,426,851.78/x
  3. Step 3: Cross multiply
    138,306,512.61x = 190,863,055.62 × 76,426,851.78
  4. Step 4: Simplify right side
    138,306,512.61x = 14,587,062,462,147,636
  5. Step 5: Solve for x
    x = 14,587,062,462,147,636/138,306,512.61
  6. Step 6: Final answer
    x = 105,469,093.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.