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Finding the Fourth Proportional to 108,004.40, 161,488.20 and 80,010.80

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Solution

The fourth proportional to 108,004.40, 161,488.20 and 80,010.80 is: 119,632.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,004.40 : 161,488.20 = 80,010.80 : x
  2. Step 2: Convert to fraction form
    108,004.40/161,488.20 = 80,010.80/x
  3. Step 3: Cross multiply
    108,004.40x = 161,488.20 × 80,010.80
  4. Step 4: Simplify right side
    108,004.40x = 12,920,800,072.56
  5. Step 5: Solve for x
    x = 12,920,800,072.56/108,004.40
  6. Step 6: Final answer
    x = 119,632.16

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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.