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Finding the Fourth Proportional to 112,482.70, 168,640.02 and 68,098.78

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Solution

The fourth proportional to 112,482.70, 168,640.02 and 68,098.78 is: 102,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,482.70 : 168,640.02 = 68,098.78 : x
  2. Step 2: Convert to fraction form
    112,482.70/168,640.02 = 68,098.78/x
  3. Step 3: Cross multiply
    112,482.70x = 168,640.02 × 68,098.78
  4. Step 4: Simplify right side
    112,482.70x = 11,484,179,621.18
  5. Step 5: Solve for x
    x = 11,484,179,621.18/112,482.70
  6. Step 6: Final answer
    x = 102,097.30

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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.