Home / 109,947.55-164,921.33-81,953.95

Finding the Fourth Proportional to 109,947.55, 164,921.33 and 81,953.95

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Solution

The fourth proportional to 109,947.55, 164,921.33 and 81,953.95 is: 122,930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,947.55 : 164,921.33 = 81,953.95 : x
  2. Step 2: Convert to fraction form
    109,947.55/164,921.33 = 81,953.95/x
  3. Step 3: Cross multiply
    109,947.55x = 164,921.33 × 81,953.95
  4. Step 4: Simplify right side
    109,947.55x = 13,515,954,022.98
  5. Step 5: Solve for x
    x = 13,515,954,022.98/109,947.55
  6. Step 6: Final answer
    x = 122,930.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.