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Finding the Fourth Proportional to 117,489.51, 162,135.62 and 63,774.49

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Solution

The fourth proportional to 117,489.51, 162,135.62 and 63,774.49 is: 88,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.51 : 162,135.62 = 63,774.49 : x
  2. Step 2: Convert to fraction form
    117,489.51/162,135.62 = 63,774.49/x
  3. Step 3: Cross multiply
    117,489.51x = 162,135.62 × 63,774.49
  4. Step 4: Simplify right side
    117,489.51x = 10,340,116,157.46
  5. Step 5: Solve for x
    x = 10,340,116,157.46/117,489.51
  6. Step 6: Final answer
    x = 88,008.85

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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.