Home / 126,040.53-189,064.44-47,139.69

Finding the Fourth Proportional to 126,040.53, 189,064.44 and 47,139.69

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Solution

The fourth proportional to 126,040.53, 189,064.44 and 47,139.69 is: 70,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,040.53 : 189,064.44 = 47,139.69 : x
  2. Step 2: Convert to fraction form
    126,040.53/189,064.44 = 47,139.69/x
  3. Step 3: Cross multiply
    126,040.53x = 189,064.44 × 47,139.69
  4. Step 4: Simplify right side
    126,040.53x = 8,912,439,091.62
  5. Step 5: Solve for x
    x = 8,912,439,091.62/126,040.53
  6. Step 6: Final answer
    x = 70,710.90

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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.