Home / 108,128.73-162,227.79-51,972.91

Finding the Fourth Proportional to 108,128.73, 162,227.79 and 51,972.91

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Solution

The fourth proportional to 108,128.73, 162,227.79 and 51,972.91 is: 77,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,128.73 : 162,227.79 = 51,972.91 : x
  2. Step 2: Convert to fraction form
    108,128.73/162,227.79 = 51,972.91/x
  3. Step 3: Cross multiply
    108,128.73x = 162,227.79 × 51,972.91
  4. Step 4: Simplify right side
    108,128.73x = 8,431,449,518.03
  5. Step 5: Solve for x
    x = 8,431,449,518.03/108,128.73
  6. Step 6: Final answer
    x = 77,976.03

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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.