Home / 138,743.96-191,466.60-78,327.14

Finding the Fourth Proportional to 138,743.96, 191,466.60 and 78,327.14

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Solution

The fourth proportional to 138,743.96, 191,466.60 and 78,327.14 is: 108,091.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.96 : 191,466.60 = 78,327.14 : x
  2. Step 2: Convert to fraction form
    138,743.96/191,466.60 = 78,327.14/x
  3. Step 3: Cross multiply
    138,743.96x = 191,466.60 × 78,327.14
  4. Step 4: Simplify right side
    138,743.96x = 14,997,031,183.52
  5. Step 5: Solve for x
    x = 14,997,031,183.52/138,743.96
  6. Step 6: Final answer
    x = 108,091.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.