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Finding the Fourth Proportional to 201,382.92, 278,015.22 and 125,955.72

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Solution

The fourth proportional to 201,382.92, 278,015.22 and 125,955.72 is: 173,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,382.92 : 278,015.22 = 125,955.72 : x
  2. Step 2: Convert to fraction form
    201,382.92/278,015.22 = 125,955.72/x
  3. Step 3: Cross multiply
    201,382.92x = 278,015.22 × 125,955.72
  4. Step 4: Simplify right side
    201,382.92x = 35,017,607,206.06
  5. Step 5: Solve for x
    x = 35,017,607,206.06/201,382.92
  6. Step 6: Final answer
    x = 173,885.69

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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.