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Finding the Fourth Proportional to 236,073.51, 354,109.77 and 73,980

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Solution

The fourth proportional to 236,073.51, 354,109.77 and 73,980 is: 110,969.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,073.51 : 354,109.77 = 73,980 : x
  2. Step 2: Convert to fraction form
    236,073.51/354,109.77 = 73,980/x
  3. Step 3: Cross multiply
    236,073.51x = 354,109.77 × 73,980
  4. Step 4: Simplify right side
    236,073.51x = 26,197,040,784.60
  5. Step 5: Solve for x
    x = 26,197,040,784.60/236,073.51
  6. Step 6: Final answer
    x = 110,969.84

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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.