Home / 126,996.80-190,560-52,174.40

Finding the Fourth Proportional to 126,996.80, 190,560 and 52,174.40

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Solution

The fourth proportional to 126,996.80, 190,560 and 52,174.40 is: 78,288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,996.80 : 190,560 = 52,174.40 : x
  2. Step 2: Convert to fraction form
    126,996.80/190,560 = 52,174.40/x
  3. Step 3: Cross multiply
    126,996.80x = 190,560 × 52,174.40
  4. Step 4: Simplify right side
    126,996.80x = 9,942,353,664
  5. Step 5: Solve for x
    x = 9,942,353,664/126,996.80
  6. Step 6: Final answer
    x = 78,288.22

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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.