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Finding the Fourth Proportional to 117,858.65, 162,644.46 and 64,143.65

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Solution

The fourth proportional to 117,858.65, 162,644.46 and 64,143.65 is: 88,517.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.65 : 162,644.46 = 64,143.65 : x
  2. Step 2: Convert to fraction form
    117,858.65/162,644.46 = 64,143.65/x
  3. Step 3: Cross multiply
    117,858.65x = 162,644.46 × 64,143.65
  4. Step 4: Simplify right side
    117,858.65x = 10,432,608,567.88
  5. Step 5: Solve for x
    x = 10,432,608,567.88/117,858.65
  6. Step 6: Final answer
    x = 88,517.97

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1.5x scale

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.