Home / 124,467,913.40-186,701,870.10-81,469,743.80

Finding the Fourth Proportional to 124,467,913.40, 186,701,870.10 and 81,469,743.80

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Solution

The fourth proportional to 124,467,913.40, 186,701,870.10 and 81,469,743.80 is: 122,204,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,467,913.40 : 186,701,870.10 = 81,469,743.80 : x
  2. Step 2: Convert to fraction form
    124,467,913.40/186,701,870.10 = 81,469,743.80/x
  3. Step 3: Cross multiply
    124,467,913.40x = 186,701,870.10 × 81,469,743.80
  4. Step 4: Simplify right side
    124,467,913.40x = 15,210,553,524,027,880
  5. Step 5: Solve for x
    x = 15,210,553,524,027,880/124,467,913.40
  6. Step 6: Final answer
    x = 122,204,615.70

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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.