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Finding the Fourth Proportional to 103,656.32, 155,502.72 and 68,624.64

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Solution

The fourth proportional to 103,656.32, 155,502.72 and 68,624.64 is: 102,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,656.32 : 155,502.72 = 68,624.64 : x
  2. Step 2: Convert to fraction form
    103,656.32/155,502.72 = 68,624.64/x
  3. Step 3: Cross multiply
    103,656.32x = 155,502.72 × 68,624.64
  4. Step 4: Simplify right side
    103,656.32x = 10,671,318,179.02
  5. Step 5: Solve for x
    x = 10,671,318,179.02/103,656.32
  6. Step 6: Final answer
    x = 102,949.04

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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.