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Finding the Fourth Proportional to 168,783.55, 253,175.66 and 68,943.81

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Solution

The fourth proportional to 168,783.55, 253,175.66 and 68,943.81 is: 103,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,783.55 : 253,175.66 = 68,943.81 : x
  2. Step 2: Convert to fraction form
    168,783.55/253,175.66 = 68,943.81/x
  3. Step 3: Cross multiply
    168,783.55x = 253,175.66 × 68,943.81
  4. Step 4: Simplify right side
    168,783.55x = 17,454,894,329.64
  5. Step 5: Solve for x
    x = 17,454,894,329.64/168,783.55
  6. Step 6: Final answer
    x = 103,415.85

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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.