Home / 205,123.23-307,741.37-71,985.96

Finding the Fourth Proportional to 205,123.23, 307,741.37 and 71,985.96

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Solution

The fourth proportional to 205,123.23, 307,741.37 and 71,985.96 is: 107,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,123.23 : 307,741.37 = 71,985.96 : x
  2. Step 2: Convert to fraction form
    205,123.23/307,741.37 = 71,985.96/x
  3. Step 3: Cross multiply
    205,123.23x = 307,741.37 × 71,985.96
  4. Step 4: Simplify right side
    205,123.23x = 22,153,057,591.24
  5. Step 5: Solve for x
    x = 22,153,057,591.24/205,123.23
  6. Step 6: Final answer
    x = 107,998.78

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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.