Home / 200,078,486.70-300,043,080.45-78,884,861.10

Finding the Fourth Proportional to 200,078,486.70, 300,043,080.45 and 78,884,861.10

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Solution

The fourth proportional to 200,078,486.70, 300,043,080.45 and 78,884,861.10 is: 118,297,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,078,486.70 : 300,043,080.45 = 78,884,861.10 : x
  2. Step 2: Convert to fraction form
    200,078,486.70/300,043,080.45 = 78,884,861.10/x
  3. Step 3: Cross multiply
    200,078,486.70x = 300,043,080.45 × 78,884,861.10
  4. Step 4: Simplify right side
    200,078,486.70x = 23,668,856,725,314,372
  5. Step 5: Solve for x
    x = 23,668,856,725,314,372/200,078,486.70
  6. Step 6: Final answer
    x = 118,297,859.58

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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.