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Finding the Fourth Proportional to 158,003.45, 218,046.89 and 86,383.29

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Solution

The fourth proportional to 158,003.45, 218,046.89 and 86,383.29 is: 119,210.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,003.45 : 218,046.89 = 86,383.29 : x
  2. Step 2: Convert to fraction form
    158,003.45/218,046.89 = 86,383.29/x
  3. Step 3: Cross multiply
    158,003.45x = 218,046.89 × 86,383.29
  4. Step 4: Simplify right side
    158,003.45x = 18,835,607,300.55
  5. Step 5: Solve for x
    x = 18,835,607,300.55/158,003.45
  6. Step 6: Final answer
    x = 119,210.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.