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Finding the Fourth Proportional to 171,957.48, 257,897.61 and 72,230.28

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Solution

The fourth proportional to 171,957.48, 257,897.61 and 72,230.28 is: 108,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,957.48 : 257,897.61 = 72,230.28 : x
  2. Step 2: Convert to fraction form
    171,957.48/257,897.61 = 72,230.28/x
  3. Step 3: Cross multiply
    171,957.48x = 257,897.61 × 72,230.28
  4. Step 4: Simplify right side
    171,957.48x = 18,628,016,581.63
  5. Step 5: Solve for x
    x = 18,628,016,581.63/171,957.48
  6. Step 6: Final answer
    x = 108,329.20

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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.