Home / 137,268.68-189,422-76,829.16

Finding the Fourth Proportional to 137,268.68, 189,422 and 76,829.16

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Solution

The fourth proportional to 137,268.68, 189,422 and 76,829.16 is: 106,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,268.68 : 189,422 = 76,829.16 : x
  2. Step 2: Convert to fraction form
    137,268.68/189,422 = 76,829.16/x
  3. Step 3: Cross multiply
    137,268.68x = 189,422 × 76,829.16
  4. Step 4: Simplify right side
    137,268.68x = 14,553,133,145.52
  5. Step 5: Solve for x
    x = 14,553,133,145.52/137,268.68
  6. Step 6: Final answer
    x = 106,019.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.