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Finding the Fourth Proportional to 117,876.06, 162,672.21 and 66,890.88

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Solution

The fourth proportional to 117,876.06, 162,672.21 and 66,890.88 is: 92,311.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,876.06 : 162,672.21 = 66,890.88 : x
  2. Step 2: Convert to fraction form
    117,876.06/162,672.21 = 66,890.88/x
  3. Step 3: Cross multiply
    117,876.06x = 162,672.21 × 66,890.88
  4. Step 4: Simplify right side
    117,876.06x = 10,881,287,278.44
  5. Step 5: Solve for x
    x = 10,881,287,278.44/117,876.06
  6. Step 6: Final answer
    x = 92,311.26

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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.