Home / 216,921.30-325,430.55-83,789.70

Finding the Fourth Proportional to 216,921.30, 325,430.55 and 83,789.70

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Solution

The fourth proportional to 216,921.30, 325,430.55 and 83,789.70 is: 125,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,921.30 : 325,430.55 = 83,789.70 : x
  2. Step 2: Convert to fraction form
    216,921.30/325,430.55 = 83,789.70/x
  3. Step 3: Cross multiply
    216,921.30x = 325,430.55 × 83,789.70
  4. Step 4: Simplify right side
    216,921.30x = 27,267,728,155.34
  5. Step 5: Solve for x
    x = 27,267,728,155.34/216,921.30
  6. Step 6: Final answer
    x = 125,703.32

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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.