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Finding the Fourth Proportional to 117,116.19, 161,619.62 and 63,400.82

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Solution

The fourth proportional to 117,116.19, 161,619.62 and 63,400.82 is: 87,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,116.19 : 161,619.62 = 63,400.82 : x
  2. Step 2: Convert to fraction form
    117,116.19/161,619.62 = 63,400.82/x
  3. Step 3: Cross multiply
    117,116.19x = 161,619.62 × 63,400.82
  4. Step 4: Simplify right side
    117,116.19x = 10,246,815,310.99
  5. Step 5: Solve for x
    x = 10,246,815,310.99/117,116.19
  6. Step 6: Final answer
    x = 87,492.73

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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.