Home / 219,826.78-329,729.94-91,690.18

Finding the Fourth Proportional to 219,826.78, 329,729.94 and 91,690.18

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Solution

The fourth proportional to 219,826.78, 329,729.94 and 91,690.18 is: 137,531.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,826.78 : 329,729.94 = 91,690.18 : x
  2. Step 2: Convert to fraction form
    219,826.78/329,729.94 = 91,690.18/x
  3. Step 3: Cross multiply
    219,826.78x = 329,729.94 × 91,690.18
  4. Step 4: Simplify right side
    219,826.78x = 30,232,996,725.66
  5. Step 5: Solve for x
    x = 30,232,996,725.66/219,826.78
  6. Step 6: Final answer
    x = 137,531.00

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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.