Home / 126,606.20-189,938.10-73,988.60

Finding the Fourth Proportional to 126,606.20, 189,938.10 and 73,988.60

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Solution

The fourth proportional to 126,606.20, 189,938.10 and 73,988.60 is: 110,999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,606.20 : 189,938.10 = 73,988.60 : x
  2. Step 2: Convert to fraction form
    126,606.20/189,938.10 = 73,988.60/x
  3. Step 3: Cross multiply
    126,606.20x = 189,938.10 × 73,988.60
  4. Step 4: Simplify right side
    126,606.20x = 14,053,254,105.66
  5. Step 5: Solve for x
    x = 14,053,254,105.66/126,606.20
  6. Step 6: Final answer
    x = 110,999.73

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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.