Home / 126,872,103.88-175,119,993.09-76,628,341.72

Finding the Fourth Proportional to 126,872,103.88, 175,119,993.09 and 76,628,341.72

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Solution

The fourth proportional to 126,872,103.88, 175,119,993.09 and 76,628,341.72 is: 105,769,150.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,872,103.88 : 175,119,993.09 = 76,628,341.72 : x
  2. Step 2: Convert to fraction form
    126,872,103.88/175,119,993.09 = 76,628,341.72/x
  3. Step 3: Cross multiply
    126,872,103.88x = 175,119,993.09 × 76,628,341.72
  4. Step 4: Simplify right side
    126,872,103.88x = 13,419,154,672,504,558
  5. Step 5: Solve for x
    x = 13,419,154,672,504,558/126,872,103.88
  6. Step 6: Final answer
    x = 105,769,150.68

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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.