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Finding the Fourth Proportional to 201,863,137.80, 302,936,424.30 and 86,930,164.20

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Solution

The fourth proportional to 201,863,137.80, 302,936,424.30 and 86,930,164.20 is: 130,456,275.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,863,137.80 : 302,936,424.30 = 86,930,164.20 : x
  2. Step 2: Convert to fraction form
    201,863,137.80/302,936,424.30 = 86,930,164.20/x
  3. Step 3: Cross multiply
    201,863,137.80x = 302,936,424.30 × 86,930,164.20
  4. Step 4: Simplify right side
    201,863,137.80x = 26,334,313,106,559,872
  5. Step 5: Solve for x
    x = 26,334,313,106,559,872/201,863,137.80
  6. Step 6: Final answer
    x = 130,456,275.44

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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.