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Finding the Fourth Proportional to 108,508.80, 162,532.80 and 90,076.80

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Solution

The fourth proportional to 108,508.80, 162,532.80 and 90,076.80 is: 134,923.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,508.80 : 162,532.80 = 90,076.80 : x
  2. Step 2: Convert to fraction form
    108,508.80/162,532.80 = 90,076.80/x
  3. Step 3: Cross multiply
    108,508.80x = 162,532.80 × 90,076.80
  4. Step 4: Simplify right side
    108,508.80x = 14,640,434,519.04
  5. Step 5: Solve for x
    x = 14,640,434,519.04/108,508.80
  6. Step 6: Final answer
    x = 134,923.94

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1.5x scale

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.