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Finding the Fourth Proportional to 126,808.69, 174,965.94 and 75,099.68

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Solution

The fourth proportional to 126,808.69, 174,965.94 and 75,099.68 is: 103,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,808.69 : 174,965.94 = 75,099.68 : x
  2. Step 2: Convert to fraction form
    126,808.69/174,965.94 = 75,099.68/x
  3. Step 3: Cross multiply
    126,808.69x = 174,965.94 × 75,099.68
  4. Step 4: Simplify right side
    126,808.69x = 13,139,885,230.07
  5. Step 5: Solve for x
    x = 13,139,885,230.07/126,808.69
  6. Step 6: Final answer
    x = 103,619.76

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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.