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Finding the Fourth Proportional to 161,854.48, 242,781.72 and 68,361.04

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Solution

The fourth proportional to 161,854.48, 242,781.72 and 68,361.04 is: 102,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,854.48 : 242,781.72 = 68,361.04 : x
  2. Step 2: Convert to fraction form
    161,854.48/242,781.72 = 68,361.04/x
  3. Step 3: Cross multiply
    161,854.48x = 242,781.72 × 68,361.04
  4. Step 4: Simplify right side
    161,854.48x = 16,596,810,872.19
  5. Step 5: Solve for x
    x = 16,596,810,872.19/161,854.48
  6. Step 6: Final answer
    x = 102,541.56

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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.