Home / 126,157.49-189,022.01-76,132.46

Finding the Fourth Proportional to 126,157.49, 189,022.01 and 76,132.46

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Solution

The fourth proportional to 126,157.49, 189,022.01 and 76,132.46 is: 114,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,157.49 : 189,022.01 = 76,132.46 : x
  2. Step 2: Convert to fraction form
    126,157.49/189,022.01 = 76,132.46/x
  3. Step 3: Cross multiply
    126,157.49x = 189,022.01 × 76,132.46
  4. Step 4: Simplify right side
    126,157.49x = 14,390,711,278.33
  5. Step 5: Solve for x
    x = 14,390,711,278.33/126,157.49
  6. Step 6: Final answer
    x = 114,069.42

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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.