Home / 126,247.21-189,623.03-78,946.45

Finding the Fourth Proportional to 126,247.21, 189,623.03 and 78,946.45

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Solution

The fourth proportional to 126,247.21, 189,623.03 and 78,946.45 is: 118,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,247.21 : 189,623.03 = 78,946.45 : x
  2. Step 2: Convert to fraction form
    126,247.21/189,623.03 = 78,946.45/x
  3. Step 3: Cross multiply
    126,247.21x = 189,623.03 × 78,946.45
  4. Step 4: Simplify right side
    126,247.21x = 14,970,064,662.01
  5. Step 5: Solve for x
    x = 14,970,064,662.01/126,247.21
  6. Step 6: Final answer
    x = 118,577.39

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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.