Home / 81,130,228.13-121,694,279.19-19,719,208.43

Finding the Fourth Proportional to 81,130,228.13, 121,694,279.19 and 19,719,208.43

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Solution

The fourth proportional to 81,130,228.13, 121,694,279.19 and 19,719,208.43 is: 29,578,554.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,130,228.13 : 121,694,279.19 = 19,719,208.43 : x
  2. Step 2: Convert to fraction form
    81,130,228.13/121,694,279.19 = 19,719,208.43/x
  3. Step 3: Cross multiply
    81,130,228.13x = 121,694,279.19 × 19,719,208.43
  4. Step 4: Simplify right side
    81,130,228.13x = 2,399,714,856,086,221.50
  5. Step 5: Solve for x
    x = 2,399,714,856,086,221.50/81,130,228.13
  6. Step 6: Final answer
    x = 29,578,554.27

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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.