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Finding the Fourth Proportional to 126,655.83, 174,786.89 and 72,950.49

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Solution

The fourth proportional to 126,655.83, 174,786.89 and 72,950.49 is: 100,672.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,655.83 : 174,786.89 = 72,950.49 : x
  2. Step 2: Convert to fraction form
    126,655.83/174,786.89 = 72,950.49/x
  3. Step 3: Cross multiply
    126,655.83x = 174,786.89 × 72,950.49
  4. Step 4: Simplify right side
    126,655.83x = 12,750,788,906.32
  5. Step 5: Solve for x
    x = 12,750,788,906.32/126,655.83
  6. Step 6: Final answer
    x = 100,672.74

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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.