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Finding the Fourth Proportional to 134,792.80, 201,800.40 and 90,469.60

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Solution

The fourth proportional to 134,792.80, 201,800.40 and 90,469.60 is: 135,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,792.80 : 201,800.40 = 90,469.60 : x
  2. Step 2: Convert to fraction form
    134,792.80/201,800.40 = 90,469.60/x
  3. Step 3: Cross multiply
    134,792.80x = 201,800.40 × 90,469.60
  4. Step 4: Simplify right side
    134,792.80x = 18,256,801,467.84
  5. Step 5: Solve for x
    x = 18,256,801,467.84/134,792.80
  6. Step 6: Final answer
    x = 135,443.45

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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.