Home / 12,138,336,139.40-18,208,008,093.90-3,856,989,451.40

Finding the Fourth Proportional to 12,138,336,139.40, 18,208,008,093.90 and 3,856,989,451.40

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Solution

The fourth proportional to 12,138,336,139.40, 18,208,008,093.90 and 3,856,989,451.40 is: 5,785,644,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,336,139.40 : 18,208,008,093.90 = 3,856,989,451.40 : x
  2. Step 2: Convert to fraction form
    12,138,336,139.40/18,208,008,093.90 = 3,856,989,451.40/x
  3. Step 3: Cross multiply
    12,138,336,139.40x = 18,208,008,093.90 × 3,856,989,451.40
  4. Step 4: Simplify right side
    12,138,336,139.40x = 70,228,095,149,178,126,336
  5. Step 5: Solve for x
    x = 70,228,095,149,178,126,336/12,138,336,139.40
  6. Step 6: Final answer
    x = 5,785,644,287.87

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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.