Home / 126,359.07-189,486.21-51,428.36

Finding the Fourth Proportional to 126,359.07, 189,486.21 and 51,428.36

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Solution

The fourth proportional to 126,359.07, 189,486.21 and 51,428.36 is: 77,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,359.07 : 189,486.21 = 51,428.36 : x
  2. Step 2: Convert to fraction form
    126,359.07/189,486.21 = 51,428.36/x
  3. Step 3: Cross multiply
    126,359.07x = 189,486.21 × 51,428.36
  4. Step 4: Simplify right side
    126,359.07x = 9,744,964,075.48
  5. Step 5: Solve for x
    x = 9,744,964,075.48/126,359.07
  6. Step 6: Final answer
    x = 77,121.21

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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.