Home / 126,105.60-189,232-69,992.80

Finding the Fourth Proportional to 126,105.60, 189,232 and 69,992.80

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Solution

The fourth proportional to 126,105.60, 189,232 and 69,992.80 is: 105,030.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,105.60 : 189,232 = 69,992.80 : x
  2. Step 2: Convert to fraction form
    126,105.60/189,232 = 69,992.80/x
  3. Step 3: Cross multiply
    126,105.60x = 189,232 × 69,992.80
  4. Step 4: Simplify right side
    126,105.60x = 13,244,877,529.60
  5. Step 5: Solve for x
    x = 13,244,877,529.60/126,105.60
  6. Step 6: Final answer
    x = 105,030.05

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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.