Home / 126,701.32-190,107.10-79,424.76

Finding the Fourth Proportional to 126,701.32, 190,107.10 and 79,424.76

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Solution

The fourth proportional to 126,701.32, 190,107.10 and 79,424.76 is: 119,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,701.32 : 190,107.10 = 79,424.76 : x
  2. Step 2: Convert to fraction form
    126,701.32/190,107.10 = 79,424.76/x
  3. Step 3: Cross multiply
    126,701.32x = 190,107.10 × 79,424.76
  4. Step 4: Simplify right side
    126,701.32x = 15,099,210,791.80
  5. Step 5: Solve for x
    x = 15,099,210,791.80/126,701.32
  6. Step 6: Final answer
    x = 119,171.69

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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.