Home / 127,040,020.20-190,560,030.30-78,667,079.40

Finding the Fourth Proportional to 127,040,020.20, 190,560,030.30 and 78,667,079.40

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Solution

The fourth proportional to 127,040,020.20, 190,560,030.30 and 78,667,079.40 is: 118,000,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,040,020.20 : 190,560,030.30 = 78,667,079.40 : x
  2. Step 2: Convert to fraction form
    127,040,020.20/190,560,030.30 = 78,667,079.40/x
  3. Step 3: Cross multiply
    127,040,020.20x = 190,560,030.30 × 78,667,079.40
  4. Step 4: Simplify right side
    127,040,020.20x = 14,990,801,034,076,508
  5. Step 5: Solve for x
    x = 14,990,801,034,076,508/127,040,020.20
  6. Step 6: Final answer
    x = 118,000,619.10

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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.