Home / 126,289.44-189,370.80-42,019.92

Finding the Fourth Proportional to 126,289.44, 189,370.80 and 42,019.92

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Solution

The fourth proportional to 126,289.44, 189,370.80 and 42,019.92 is: 63,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,289.44 : 189,370.80 = 42,019.92 : x
  2. Step 2: Convert to fraction form
    126,289.44/189,370.80 = 42,019.92/x
  3. Step 3: Cross multiply
    126,289.44x = 189,370.80 × 42,019.92
  4. Step 4: Simplify right side
    126,289.44x = 7,957,345,866.34
  5. Step 5: Solve for x
    x = 7,957,345,866.34/126,289.44
  6. Step 6: Final answer
    x = 63,008.80

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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.