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Finding the Fourth Proportional to 171,108.80, 256,274.40 and 108,123.20

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Solution

The fourth proportional to 171,108.80, 256,274.40 and 108,123.20 is: 161,939.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,108.80 : 256,274.40 = 108,123.20 : x
  2. Step 2: Convert to fraction form
    171,108.80/256,274.40 = 108,123.20/x
  3. Step 3: Cross multiply
    171,108.80x = 256,274.40 × 108,123.20
  4. Step 4: Simplify right side
    171,108.80x = 27,709,208,206.08
  5. Step 5: Solve for x
    x = 27,709,208,206.08/171,108.80
  6. Step 6: Final answer
    x = 161,939.12

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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.