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Finding the Fourth Proportional to 158,607.36, 218,880 and 91,560.96

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Solution

The fourth proportional to 158,607.36, 218,880 and 91,560.96 is: 126,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,607.36 : 218,880 = 91,560.96 : x
  2. Step 2: Convert to fraction form
    158,607.36/218,880 = 91,560.96/x
  3. Step 3: Cross multiply
    158,607.36x = 218,880 × 91,560.96
  4. Step 4: Simplify right side
    158,607.36x = 20,040,862,924.80
  5. Step 5: Solve for x
    x = 20,040,862,924.80/158,607.36
  6. Step 6: Final answer
    x = 126,355.19

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Why These Related Problems?

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