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Finding the Fourth Proportional to 117,310.32, 161,878.68 and 66,327.48

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Solution

The fourth proportional to 117,310.32, 161,878.68 and 66,327.48 is: 91,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,310.32 : 161,878.68 = 66,327.48 : x
  2. Step 2: Convert to fraction form
    117,310.32/161,878.68 = 66,327.48/x
  3. Step 3: Cross multiply
    117,310.32x = 161,878.68 × 66,327.48
  4. Step 4: Simplify right side
    117,310.32x = 10,737,004,910.13
  5. Step 5: Solve for x
    x = 10,737,004,910.13/117,310.32
  6. Step 6: Final answer
    x = 91,526.52

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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.