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Finding the Fourth Proportional to 117,704.16, 162,429.81 and 63,990.51

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Solution

The fourth proportional to 117,704.16, 162,429.81 and 63,990.51 is: 88,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,704.16 : 162,429.81 = 63,990.51 : x
  2. Step 2: Convert to fraction form
    117,704.16/162,429.81 = 63,990.51/x
  3. Step 3: Cross multiply
    117,704.16x = 162,429.81 × 63,990.51
  4. Step 4: Simplify right side
    117,704.16x = 10,393,966,381.10
  5. Step 5: Solve for x
    x = 10,393,966,381.10/117,704.16
  6. Step 6: Final answer
    x = 88,305.85

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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.