Home / 127,279.86-190,929.35-38,540.51

Finding the Fourth Proportional to 127,279.86, 190,929.35 and 38,540.51

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Solution

The fourth proportional to 127,279.86, 190,929.35 and 38,540.51 is: 57,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,279.86 : 190,929.35 = 38,540.51 : x
  2. Step 2: Convert to fraction form
    127,279.86/190,929.35 = 38,540.51/x
  3. Step 3: Cross multiply
    127,279.86x = 190,929.35 × 38,540.51
  4. Step 4: Simplify right side
    127,279.86x = 7,358,514,380.66
  5. Step 5: Solve for x
    x = 7,358,514,380.66/127,279.86
  6. Step 6: Final answer
    x = 57,813.66

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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.