Home / 221,112.68-305,143.72-125,635.52

Finding the Fourth Proportional to 221,112.68, 305,143.72 and 125,635.52

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Solution

The fourth proportional to 221,112.68, 305,143.72 and 125,635.52 is: 173,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,112.68 : 305,143.72 = 125,635.52 : x
  2. Step 2: Convert to fraction form
    221,112.68/305,143.72 = 125,635.52/x
  3. Step 3: Cross multiply
    221,112.68x = 305,143.72 × 125,635.52
  4. Step 4: Simplify right side
    221,112.68x = 38,336,889,936.93
  5. Step 5: Solve for x
    x = 38,336,889,936.93/221,112.68
  6. Step 6: Final answer
    x = 173,381.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.