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Finding the Fourth Proportional to 117,492.72, 162,129.24 and 67,190.64

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Solution

The fourth proportional to 117,492.72, 162,129.24 and 67,190.64 is: 92,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,492.72 : 162,129.24 = 67,190.64 : x
  2. Step 2: Convert to fraction form
    117,492.72/162,129.24 = 67,190.64/x
  3. Step 3: Cross multiply
    117,492.72x = 162,129.24 × 67,190.64
  4. Step 4: Simplify right side
    117,492.72x = 10,893,567,398.31
  5. Step 5: Solve for x
    x = 10,893,567,398.31/117,492.72
  6. Step 6: Final answer
    x = 92,716.96

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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.