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Finding the Fourth Proportional to 117,643.89, 162,345.29 and 63,927.12

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Solution

The fourth proportional to 117,643.89, 162,345.29 and 63,927.12 is: 88,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,643.89 : 162,345.29 = 63,927.12 : x
  2. Step 2: Convert to fraction form
    117,643.89/162,345.29 = 63,927.12/x
  3. Step 3: Cross multiply
    117,643.89x = 162,345.29 × 63,927.12
  4. Step 4: Simplify right side
    117,643.89x = 10,378,266,146.56
  5. Step 5: Solve for x
    x = 10,378,266,146.56/117,643.89
  6. Step 6: Final answer
    x = 88,217.64

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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.