Home / 126,365.26-189,599.45-81,410.11

Finding the Fourth Proportional to 126,365.26, 189,599.45 and 81,410.11

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Solution

The fourth proportional to 126,365.26, 189,599.45 and 81,410.11 is: 122,148.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,365.26 : 189,599.45 = 81,410.11 : x
  2. Step 2: Convert to fraction form
    126,365.26/189,599.45 = 81,410.11/x
  3. Step 3: Cross multiply
    126,365.26x = 189,599.45 × 81,410.11
  4. Step 4: Simplify right side
    126,365.26x = 15,435,311,199.39
  5. Step 5: Solve for x
    x = 15,435,311,199.39/126,365.26
  6. Step 6: Final answer
    x = 122,148.38

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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.