Home / 126,859.89-190,311.72-42,628.14

Finding the Fourth Proportional to 126,859.89, 190,311.72 and 42,628.14

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Solution

The fourth proportional to 126,859.89, 190,311.72 and 42,628.14 is: 63,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,859.89 : 190,311.72 = 42,628.14 : x
  2. Step 2: Convert to fraction form
    126,859.89/190,311.72 = 42,628.14/x
  3. Step 3: Cross multiply
    126,859.89x = 190,311.72 × 42,628.14
  4. Step 4: Simplify right side
    126,859.89x = 8,112,634,643.80
  5. Step 5: Solve for x
    x = 8,112,634,643.80/126,859.89
  6. Step 6: Final answer
    x = 63,949.56

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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.