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Finding the Fourth Proportional to 115,296.40, 173,203.80 and 80,304.40

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Solution

The fourth proportional to 115,296.40, 173,203.80 and 80,304.40 is: 120,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,296.40 : 173,203.80 = 80,304.40 : x
  2. Step 2: Convert to fraction form
    115,296.40/173,203.80 = 80,304.40/x
  3. Step 3: Cross multiply
    115,296.40x = 173,203.80 × 80,304.40
  4. Step 4: Simplify right side
    115,296.40x = 13,909,027,236.72
  5. Step 5: Solve for x
    x = 13,909,027,236.72/115,296.40
  6. Step 6: Final answer
    x = 120,637.13

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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.