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Finding the Fourth Proportional to 116,385.28, 160,629.92 and 68,643.88

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Solution

The fourth proportional to 116,385.28, 160,629.92 and 68,643.88 is: 94,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,385.28 : 160,629.92 = 68,643.88 : x
  2. Step 2: Convert to fraction form
    116,385.28/160,629.92 = 68,643.88/x
  3. Step 3: Cross multiply
    116,385.28x = 160,629.92 × 68,643.88
  4. Step 4: Simplify right side
    116,385.28x = 11,026,260,952.89
  5. Step 5: Solve for x
    x = 11,026,260,952.89/116,385.28
  6. Step 6: Final answer
    x = 94,739.31

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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.