Home / 126,770.45-189,875.37-86,694.46

Finding the Fourth Proportional to 126,770.45, 189,875.37 and 86,694.46

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Solution

The fourth proportional to 126,770.45, 189,875.37 and 86,694.46 is: 129,850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,770.45 : 189,875.37 = 86,694.46 : x
  2. Step 2: Convert to fraction form
    126,770.45/189,875.37 = 86,694.46/x
  3. Step 3: Cross multiply
    126,770.45x = 189,875.37 × 86,694.46
  4. Step 4: Simplify right side
    126,770.45x = 16,461,142,519.87
  5. Step 5: Solve for x
    x = 16,461,142,519.87/126,770.45
  6. Step 6: Final answer
    x = 129,850.00

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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.