Home / 126,856.94-190,433.03-100,678.55

Finding the Fourth Proportional to 126,856.94, 190,433.03 and 100,678.55

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Solution

The fourth proportional to 126,856.94, 190,433.03 and 100,678.55 is: 151,134.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,856.94 : 190,433.03 = 100,678.55 : x
  2. Step 2: Convert to fraction form
    126,856.94/190,433.03 = 100,678.55/x
  3. Step 3: Cross multiply
    126,856.94x = 190,433.03 × 100,678.55
  4. Step 4: Simplify right side
    126,856.94x = 19,172,519,876.95
  5. Step 5: Solve for x
    x = 19,172,519,876.95/126,856.94
  6. Step 6: Final answer
    x = 151,134.98

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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.