Home / 99,749.78-137,654.64-63,939.77

Finding the Fourth Proportional to 99,749.78, 137,654.64 and 63,939.77

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Solution

The fourth proportional to 99,749.78, 137,654.64 and 63,939.77 is: 88,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,749.78 : 137,654.64 = 63,939.77 : x
  2. Step 2: Convert to fraction form
    99,749.78/137,654.64 = 63,939.77/x
  3. Step 3: Cross multiply
    99,749.78x = 137,654.64 × 63,939.77
  4. Step 4: Simplify right side
    99,749.78x = 8,801,606,021.03
  5. Step 5: Solve for x
    x = 8,801,606,021.03/99,749.78
  6. Step 6: Final answer
    x = 88,236.85

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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.