Home / 127,819,936.80-191,729,905.20-79,352,517.60

Finding the Fourth Proportional to 127,819,936.80, 191,729,905.20 and 79,352,517.60

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Solution

The fourth proportional to 127,819,936.80, 191,729,905.20 and 79,352,517.60 is: 119,028,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,819,936.80 : 191,729,905.20 = 79,352,517.60 : x
  2. Step 2: Convert to fraction form
    127,819,936.80/191,729,905.20 = 79,352,517.60/x
  3. Step 3: Cross multiply
    127,819,936.80x = 191,729,905.20 × 79,352,517.60
  4. Step 4: Simplify right side
    127,819,936.80x = 15,214,250,676,829,330
  5. Step 5: Solve for x
    x = 15,214,250,676,829,330/127,819,936.80
  6. Step 6: Final answer
    x = 119,028,776.40

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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.