Home / 126,276.69-189,172.08-78,910.41

Finding the Fourth Proportional to 126,276.69, 189,172.08 and 78,910.41

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Solution

The fourth proportional to 126,276.69, 189,172.08 and 78,910.41 is: 118,213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,276.69 : 189,172.08 = 78,910.41 : x
  2. Step 2: Convert to fraction form
    126,276.69/189,172.08 = 78,910.41/x
  3. Step 3: Cross multiply
    126,276.69x = 189,172.08 × 78,910.41
  4. Step 4: Simplify right side
    126,276.69x = 14,927,646,393.35
  5. Step 5: Solve for x
    x = 14,927,646,393.35/126,276.69
  6. Step 6: Final answer
    x = 118,213.79

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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.