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Finding the Fourth Proportional to 117,639.30, 162,343.22 and 63,924.32

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Solution

The fourth proportional to 117,639.30, 162,343.22 and 63,924.32 is: 88,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639.30 : 162,343.22 = 63,924.32 : x
  2. Step 2: Convert to fraction form
    117,639.30/162,343.22 = 63,924.32/x
  3. Step 3: Cross multiply
    117,639.30x = 162,343.22 × 63,924.32
  4. Step 4: Simplify right side
    117,639.30x = 10,377,679,945.11
  5. Step 5: Solve for x
    x = 10,377,679,945.11/117,639.30
  6. Step 6: Final answer
    x = 88,216.10

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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.