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Finding the Fourth Proportional to 117,890.28, 162,674.28 and 66,908.88

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Solution

The fourth proportional to 117,890.28, 162,674.28 and 66,908.88 is: 92,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,890.28 : 162,674.28 = 66,908.88 : x
  2. Step 2: Convert to fraction form
    117,890.28/162,674.28 = 66,908.88/x
  3. Step 3: Cross multiply
    117,890.28x = 162,674.28 × 66,908.88
  4. Step 4: Simplify right side
    117,890.28x = 10,884,353,879.61
  5. Step 5: Solve for x
    x = 10,884,353,879.61/117,890.28
  6. Step 6: Final answer
    x = 92,326.13

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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.