Home / 126,051.26-189,076.20-72,708.66

Finding the Fourth Proportional to 126,051.26, 189,076.20 and 72,708.66

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Solution

The fourth proportional to 126,051.26, 189,076.20 and 72,708.66 is: 109,062.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,051.26 : 189,076.20 = 72,708.66 : x
  2. Step 2: Convert to fraction form
    126,051.26/189,076.20 = 72,708.66/x
  3. Step 3: Cross multiply
    126,051.26x = 189,076.20 × 72,708.66
  4. Step 4: Simplify right side
    126,051.26x = 13,747,477,139.89
  5. Step 5: Solve for x
    x = 13,747,477,139.89/126,051.26
  6. Step 6: Final answer
    x = 109,062.59

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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.