Home / 219,929.72-329,921.71-77,745.66

Finding the Fourth Proportional to 219,929.72, 329,921.71 and 77,745.66

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Solution

The fourth proportional to 219,929.72, 329,921.71 and 77,745.66 is: 116,628.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,929.72 : 329,921.71 = 77,745.66 : x
  2. Step 2: Convert to fraction form
    219,929.72/329,921.71 = 77,745.66/x
  3. Step 3: Cross multiply
    219,929.72x = 329,921.71 × 77,745.66
  4. Step 4: Simplify right side
    219,929.72x = 25,649,979,660.71
  5. Step 5: Solve for x
    x = 25,649,979,660.71/219,929.72
  6. Step 6: Final answer
    x = 116,628.08

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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.