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Finding the Fourth Proportional to 171,702.80, 257,554.20 and 108,717.20

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Solution

The fourth proportional to 171,702.80, 257,554.20 and 108,717.20 is: 163,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,702.80 : 257,554.20 = 108,717.20 : x
  2. Step 2: Convert to fraction form
    171,702.80/257,554.20 = 108,717.20/x
  3. Step 3: Cross multiply
    171,702.80x = 257,554.20 × 108,717.20
  4. Step 4: Simplify right side
    171,702.80x = 28,000,571,472.24
  5. Step 5: Solve for x
    x = 28,000,571,472.24/171,702.80
  6. Step 6: Final answer
    x = 163,075.80

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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.