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Finding the Fourth Proportional to 174,679.40, 261,792.30 and 80,985.80

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Solution

The fourth proportional to 174,679.40, 261,792.30 and 80,985.80 is: 121,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,679.40 : 261,792.30 = 80,985.80 : x
  2. Step 2: Convert to fraction form
    174,679.40/261,792.30 = 80,985.80/x
  3. Step 3: Cross multiply
    174,679.40x = 261,792.30 × 80,985.80
  4. Step 4: Simplify right side
    174,679.40x = 21,201,458,849.34
  5. Step 5: Solve for x
    x = 21,201,458,849.34/174,679.40
  6. Step 6: Final answer
    x = 121,373.55

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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.