Home / 126,144,051.20-189,216,076.80-30,405,939.20

Finding the Fourth Proportional to 126,144,051.20, 189,216,076.80 and 30,405,939.20

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Solution

The fourth proportional to 126,144,051.20, 189,216,076.80 and 30,405,939.20 is: 45,608,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,144,051.20 : 189,216,076.80 = 30,405,939.20 : x
  2. Step 2: Convert to fraction form
    126,144,051.20/189,216,076.80 = 30,405,939.20/x
  3. Step 3: Cross multiply
    126,144,051.20x = 189,216,076.80 × 30,405,939.20
  4. Step 4: Simplify right side
    126,144,051.20x = 5,753,292,526,843,331
  5. Step 5: Solve for x
    x = 5,753,292,526,843,331/126,144,051.20
  6. Step 6: Final answer
    x = 45,608,908.80

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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.