Home / 131,103.07-180,921.21-74,514.45

Finding the Fourth Proportional to 131,103.07, 180,921.21 and 74,514.45

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Solution

The fourth proportional to 131,103.07, 180,921.21 and 74,514.45 is: 102,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,103.07 : 180,921.21 = 74,514.45 : x
  2. Step 2: Convert to fraction form
    131,103.07/180,921.21 = 74,514.45/x
  3. Step 3: Cross multiply
    131,103.07x = 180,921.21 × 74,514.45
  4. Step 4: Simplify right side
    131,103.07x = 13,481,244,256.97
  5. Step 5: Solve for x
    x = 13,481,244,256.97/131,103.07
  6. Step 6: Final answer
    x = 102,829.35

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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.