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Finding the Fourth Proportional to 111,894.67, 154,433.82 and 71,606.49

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Solution

The fourth proportional to 111,894.67, 154,433.82 and 71,606.49 is: 98,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,894.67 : 154,433.82 = 71,606.49 : x
  2. Step 2: Convert to fraction form
    111,894.67/154,433.82 = 71,606.49/x
  3. Step 3: Cross multiply
    111,894.67x = 154,433.82 × 71,606.49
  4. Step 4: Simplify right side
    111,894.67x = 11,058,463,787.49
  5. Step 5: Solve for x
    x = 11,058,463,787.49/111,894.67
  6. Step 6: Final answer
    x = 98,829.23

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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.