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Finding the Fourth Proportional to 171,048.80, 256,573.20 and 126,871.40

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Solution

The fourth proportional to 171,048.80, 256,573.20 and 126,871.40 is: 190,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,048.80 : 256,573.20 = 126,871.40 : x
  2. Step 2: Convert to fraction form
    171,048.80/256,573.20 = 126,871.40/x
  3. Step 3: Cross multiply
    171,048.80x = 256,573.20 × 126,871.40
  4. Step 4: Simplify right side
    171,048.80x = 32,551,801,086.48
  5. Step 5: Solve for x
    x = 32,551,801,086.48/171,048.80
  6. Step 6: Final answer
    x = 190,307.10

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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.