Home / 140,382.88-210,514.38-81,259.36

Finding the Fourth Proportional to 140,382.88, 210,514.38 and 81,259.36

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Solution

The fourth proportional to 140,382.88, 210,514.38 and 81,259.36 is: 121,854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,382.88 : 210,514.38 = 81,259.36 : x
  2. Step 2: Convert to fraction form
    140,382.88/210,514.38 = 81,259.36/x
  3. Step 3: Cross multiply
    140,382.88x = 210,514.38 × 81,259.36
  4. Step 4: Simplify right side
    140,382.88x = 17,106,263,789.60
  5. Step 5: Solve for x
    x = 17,106,263,789.60/140,382.88
  6. Step 6: Final answer
    x = 121,854.34

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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.