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Finding the Fourth Proportional to 126,722, 174,876.36 and 73,730

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Solution

The fourth proportional to 126,722, 174,876.36 and 73,730 is: 101,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,722 : 174,876.36 = 73,730 : x
  2. Step 2: Convert to fraction form
    126,722/174,876.36 = 73,730/x
  3. Step 3: Cross multiply
    126,722x = 174,876.36 × 73,730
  4. Step 4: Simplify right side
    126,722x = 12,893,634,022.80
  5. Step 5: Solve for x
    x = 12,893,634,022.80/126,722
  6. Step 6: Final answer
    x = 101,747.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.