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Finding the Fourth Proportional to 121,774.88, 168,048.28 and 68,059.28

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Solution

The fourth proportional to 121,774.88, 168,048.28 and 68,059.28 is: 93,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,774.88 : 168,048.28 = 68,059.28 : x
  2. Step 2: Convert to fraction form
    121,774.88/168,048.28 = 68,059.28/x
  3. Step 3: Cross multiply
    121,774.88x = 168,048.28 × 68,059.28
  4. Step 4: Simplify right side
    121,774.88x = 11,437,244,942.04
  5. Step 5: Solve for x
    x = 11,437,244,942.04/121,774.88
  6. Step 6: Final answer
    x = 93,921.22

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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.