Home / 213,609.23-320,484.04-87,355.69

Finding the Fourth Proportional to 213,609.23, 320,484.04 and 87,355.69

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Solution

The fourth proportional to 213,609.23, 320,484.04 and 87,355.69 is: 131,062.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,609.23 : 320,484.04 = 87,355.69 : x
  2. Step 2: Convert to fraction form
    213,609.23/320,484.04 = 87,355.69/x
  3. Step 3: Cross multiply
    213,609.23x = 320,484.04 × 87,355.69
  4. Step 4: Simplify right side
    213,609.23x = 27,996,104,821.33
  5. Step 5: Solve for x
    x = 27,996,104,821.33/213,609.23
  6. Step 6: Final answer
    x = 131,062.25

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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.