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Finding the Fourth Proportional to 168,420.81, 252,482.58 and 68,664.45

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Solution

The fourth proportional to 168,420.81, 252,482.58 and 68,664.45 is: 102,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,420.81 : 252,482.58 = 68,664.45 : x
  2. Step 2: Convert to fraction form
    168,420.81/252,482.58 = 68,664.45/x
  3. Step 3: Cross multiply
    168,420.81x = 252,482.58 × 68,664.45
  4. Step 4: Simplify right side
    168,420.81x = 17,336,577,490.28
  5. Step 5: Solve for x
    x = 17,336,577,490.28/168,420.81
  6. Step 6: Final answer
    x = 102,936.08

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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.