Home / 126,288.68-189,268.47-51,321.20

Finding the Fourth Proportional to 126,288.68, 189,268.47 and 51,321.20

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Solution

The fourth proportional to 126,288.68, 189,268.47 and 51,321.20 is: 76,914.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,288.68 : 189,268.47 = 51,321.20 : x
  2. Step 2: Convert to fraction form
    126,288.68/189,268.47 = 51,321.20/x
  3. Step 3: Cross multiply
    126,288.68x = 189,268.47 × 51,321.20
  4. Step 4: Simplify right side
    126,288.68x = 9,713,484,056.22
  5. Step 5: Solve for x
    x = 9,713,484,056.22/126,288.68
  6. Step 6: Final answer
    x = 76,914.93

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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.