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Finding the Fourth Proportional to 171,955.48, 257,894.61 and 72,228.28

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Solution

The fourth proportional to 171,955.48, 257,894.61 and 72,228.28 is: 108,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,955.48 : 257,894.61 = 72,228.28 : x
  2. Step 2: Convert to fraction form
    171,955.48/257,894.61 = 72,228.28/x
  3. Step 3: Cross multiply
    171,955.48x = 257,894.61 × 72,228.28
  4. Step 4: Simplify right side
    171,955.48x = 18,627,284,101.57
  5. Step 5: Solve for x
    x = 18,627,284,101.57/171,955.48
  6. Step 6: Final answer
    x = 108,326.20

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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.