Home / 109,947.30-164,920.95-81,953.70

Finding the Fourth Proportional to 109,947.30, 164,920.95 and 81,953.70

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Solution

The fourth proportional to 109,947.30, 164,920.95 and 81,953.70 is: 122,930.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,947.30 : 164,920.95 = 81,953.70 : x
  2. Step 2: Convert to fraction form
    109,947.30/164,920.95 = 81,953.70/x
  3. Step 3: Cross multiply
    109,947.30x = 164,920.95 × 81,953.70
  4. Step 4: Simplify right side
    109,947.30x = 13,515,882,060.02
  5. Step 5: Solve for x
    x = 13,515,882,060.02/109,947.30
  6. Step 6: Final answer
    x = 122,930.55

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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.