Home / 126,507.24-189,792-89,140.29

Finding the Fourth Proportional to 126,507.24, 189,792 and 89,140.29

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Solution

The fourth proportional to 126,507.24, 189,792 and 89,140.29 is: 133,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,507.24 : 189,792 = 89,140.29 : x
  2. Step 2: Convert to fraction form
    126,507.24/189,792 = 89,140.29/x
  3. Step 3: Cross multiply
    126,507.24x = 189,792 × 89,140.29
  4. Step 4: Simplify right side
    126,507.24x = 16,918,113,919.68
  5. Step 5: Solve for x
    x = 16,918,113,919.68/126,507.24
  6. Step 6: Final answer
    x = 133,732.38

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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.