Home / 108,021.40-161,513.70-80,027.80

Finding the Fourth Proportional to 108,021.40, 161,513.70 and 80,027.80

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Solution

The fourth proportional to 108,021.40, 161,513.70 and 80,027.80 is: 119,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,021.40 : 161,513.70 = 80,027.80 : x
  2. Step 2: Convert to fraction form
    108,021.40/161,513.70 = 80,027.80/x
  3. Step 3: Cross multiply
    108,021.40x = 161,513.70 × 80,027.80
  4. Step 4: Simplify right side
    108,021.40x = 12,925,586,080.86
  5. Step 5: Solve for x
    x = 12,925,586,080.86/108,021.40
  6. Step 6: Final answer
    x = 119,657.64

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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.