Home / 144,292,390.38-199,118,164.13-78,211,469.87

Finding the Fourth Proportional to 144,292,390.38, 199,118,164.13 and 78,211,469.87

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Solution

The fourth proportional to 144,292,390.38, 199,118,164.13 and 78,211,469.87 is: 107,928,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292,390.38 : 199,118,164.13 = 78,211,469.87 : x
  2. Step 2: Convert to fraction form
    144,292,390.38/199,118,164.13 = 78,211,469.87/x
  3. Step 3: Cross multiply
    144,292,390.38x = 199,118,164.13 × 78,211,469.87
  4. Step 4: Simplify right side
    144,292,390.38x = 15,573,324,293,442,190
  5. Step 5: Solve for x
    x = 15,573,324,293,442,190/144,292,390.38
  6. Step 6: Final answer
    x = 107,928,936.88

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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.