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Finding the Fourth Proportional to 117,432.65, 162,099.09 and 69,686

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Solution

The fourth proportional to 117,432.65, 162,099.09 and 69,686 is: 96,191.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,432.65 : 162,099.09 = 69,686 : x
  2. Step 2: Convert to fraction form
    117,432.65/162,099.09 = 69,686/x
  3. Step 3: Cross multiply
    117,432.65x = 162,099.09 × 69,686
  4. Step 4: Simplify right side
    117,432.65x = 11,296,037,185.74
  5. Step 5: Solve for x
    x = 11,296,037,185.74/117,432.65
  6. Step 6: Final answer
    x = 96,191.62

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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.