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Finding the Fourth Proportional to 202,869.51, 279,954.85 and 112,230.51

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Solution

The fourth proportional to 202,869.51, 279,954.85 and 112,230.51 is: 154,875.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,869.51 : 279,954.85 = 112,230.51 : x
  2. Step 2: Convert to fraction form
    202,869.51/279,954.85 = 112,230.51/x
  3. Step 3: Cross multiply
    202,869.51x = 279,954.85 × 112,230.51
  4. Step 4: Simplify right side
    202,869.51x = 31,419,475,592.47
  5. Step 5: Solve for x
    x = 31,419,475,592.47/202,869.51
  6. Step 6: Final answer
    x = 154,875.30

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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.