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Finding the Fourth Proportional to 116,880, 161,294.40 and 63,888

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Solution

The fourth proportional to 116,880, 161,294.40 and 63,888 is: 88,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,880 : 161,294.40 = 63,888 : x
  2. Step 2: Convert to fraction form
    116,880/161,294.40 = 63,888/x
  3. Step 3: Cross multiply
    116,880x = 161,294.40 × 63,888
  4. Step 4: Simplify right side
    116,880x = 10,304,776,627.20
  5. Step 5: Solve for x
    x = 10,304,776,627.20/116,880
  6. Step 6: Final answer
    x = 88,165.44

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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.