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Finding the Fourth Proportional to 202,796.62, 279,857.70 and 112,156.40

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Solution

The fourth proportional to 202,796.62, 279,857.70 and 112,156.40 is: 154,774.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,796.62 : 279,857.70 = 112,156.40 : x
  2. Step 2: Convert to fraction form
    202,796.62/279,857.70 = 112,156.40/x
  3. Step 3: Cross multiply
    202,796.62x = 279,857.70 × 112,156.40
  4. Step 4: Simplify right side
    202,796.62x = 31,387,832,144.28
  5. Step 5: Solve for x
    x = 31,387,832,144.28/202,796.62
  6. Step 6: Final answer
    x = 154,774.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.