Home / 105,913.71-158,906.97-66,424.59

Finding the Fourth Proportional to 105,913.71, 158,906.97 and 66,424.59

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Solution

The fourth proportional to 105,913.71, 158,906.97 and 66,424.59 is: 99,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,913.71 : 158,906.97 = 66,424.59 : x
  2. Step 2: Convert to fraction form
    105,913.71/158,906.97 = 66,424.59/x
  3. Step 3: Cross multiply
    105,913.71x = 158,906.97 × 66,424.59
  4. Step 4: Simplify right side
    105,913.71x = 10,555,330,330.39
  5. Step 5: Solve for x
    x = 10,555,330,330.39/105,913.71
  6. Step 6: Final answer
    x = 99,659.72

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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.