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Finding the Fourth Proportional to 126,511.98, 174,615.64 and 72,828.14

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Solution

The fourth proportional to 126,511.98, 174,615.64 and 72,828.14 is: 100,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,511.98 : 174,615.64 = 72,828.14 : x
  2. Step 2: Convert to fraction form
    126,511.98/174,615.64 = 72,828.14/x
  3. Step 3: Cross multiply
    126,511.98x = 174,615.64 × 72,828.14
  4. Step 4: Simplify right side
    126,511.98x = 12,716,932,276.11
  5. Step 5: Solve for x
    x = 12,716,932,276.11/126,511.98
  6. Step 6: Final answer
    x = 100,519.59

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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.