Home / 102,059.56-140,634.47-78,948.98

Finding the Fourth Proportional to 102,059.56, 140,634.47 and 78,948.98

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Solution

The fourth proportional to 102,059.56, 140,634.47 and 78,948.98 is: 108,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,059.56 : 140,634.47 = 78,948.98 : x
  2. Step 2: Convert to fraction form
    102,059.56/140,634.47 = 78,948.98/x
  3. Step 3: Cross multiply
    102,059.56x = 140,634.47 × 78,948.98
  4. Step 4: Simplify right side
    102,059.56x = 11,102,947,453.54
  5. Step 5: Solve for x
    x = 11,102,947,453.54/102,059.56
  6. Step 6: Final answer
    x = 108,788.90

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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.