Home / 219,837.70-329,865.90-86,722.30

Finding the Fourth Proportional to 219,837.70, 329,865.90 and 86,722.30

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Solution

The fourth proportional to 219,837.70, 329,865.90 and 86,722.30 is: 130,126.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,837.70 : 329,865.90 = 86,722.30 : x
  2. Step 2: Convert to fraction form
    219,837.70/329,865.90 = 86,722.30/x
  3. Step 3: Cross multiply
    219,837.70x = 329,865.90 × 86,722.30
  4. Step 4: Simplify right side
    219,837.70x = 28,606,729,539.57
  5. Step 5: Solve for x
    x = 28,606,729,539.57/219,837.70
  6. Step 6: Final answer
    x = 130,126.59

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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.