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Finding the Fourth Proportional to 117,450.30, 176,118.04 and 81,928.64

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Solution

The fourth proportional to 117,450.30, 176,118.04 and 81,928.64 is: 122,852.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,450.30 : 176,118.04 = 81,928.64 : x
  2. Step 2: Convert to fraction form
    117,450.30/176,118.04 = 81,928.64/x
  3. Step 3: Cross multiply
    117,450.30x = 176,118.04 × 81,928.64
  4. Step 4: Simplify right side
    117,450.30x = 14,429,111,496.67
  5. Step 5: Solve for x
    x = 14,429,111,496.67/117,450.30
  6. Step 6: Final answer
    x = 122,852.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.