Home / 126,340.14-189,208.08-72,870.03

Finding the Fourth Proportional to 126,340.14, 189,208.08 and 72,870.03

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Solution

The fourth proportional to 126,340.14, 189,208.08 and 72,870.03 is: 109,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,340.14 : 189,208.08 = 72,870.03 : x
  2. Step 2: Convert to fraction form
    126,340.14/189,208.08 = 72,870.03/x
  3. Step 3: Cross multiply
    126,340.14x = 189,208.08 × 72,870.03
  4. Step 4: Simplify right side
    126,340.14x = 13,787,597,519.80
  5. Step 5: Solve for x
    x = 13,787,597,519.80/126,340.14
  6. Step 6: Final answer
    x = 109,130.78

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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.