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Finding the Fourth Proportional to 90,201,629.20, 135,302,443.80 and 90,201,629.20

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Solution

The fourth proportional to 90,201,629.20, 135,302,443.80 and 90,201,629.20 is: 135,302,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201,629.20 : 135,302,443.80 = 90,201,629.20 : x
  2. Step 2: Convert to fraction form
    90,201,629.20/135,302,443.80 = 90,201,629.20/x
  3. Step 3: Cross multiply
    90,201,629.20x = 135,302,443.80 × 90,201,629.20
  4. Step 4: Simplify right side
    90,201,629.20x = 12,204,500,865,501,440
  5. Step 5: Solve for x
    x = 12,204,500,865,501,440/90,201,629.20
  6. Step 6: Final answer
    x = 135,302,443.80

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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.