Home / 127,789.88-191,709.42-57,669.19

Finding the Fourth Proportional to 127,789.88, 191,709.42 and 57,669.19

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Solution

The fourth proportional to 127,789.88, 191,709.42 and 57,669.19 is: 86,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,789.88 : 191,709.42 = 57,669.19 : x
  2. Step 2: Convert to fraction form
    127,789.88/191,709.42 = 57,669.19/x
  3. Step 3: Cross multiply
    127,789.88x = 191,709.42 × 57,669.19
  4. Step 4: Simplify right side
    127,789.88x = 11,055,726,271.24
  5. Step 5: Solve for x
    x = 11,055,726,271.24/127,789.88
  6. Step 6: Final answer
    x = 86,514.88

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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.