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Finding the Fourth Proportional to 174,425.80, 261,638.70 and 115,328.20

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Solution

The fourth proportional to 174,425.80, 261,638.70 and 115,328.20 is: 172,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,425.80 : 261,638.70 = 115,328.20 : x
  2. Step 2: Convert to fraction form
    174,425.80/261,638.70 = 115,328.20/x
  3. Step 3: Cross multiply
    174,425.80x = 261,638.70 × 115,328.20
  4. Step 4: Simplify right side
    174,425.80x = 30,174,320,321.34
  5. Step 5: Solve for x
    x = 30,174,320,321.34/174,425.80
  6. Step 6: Final answer
    x = 172,992.30

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1.5x scale

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.