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Finding the Fourth Proportional to 202,712.66, 279,741.92 and 112,072.45

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Solution

The fourth proportional to 202,712.66, 279,741.92 and 112,072.45 is: 154,659.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,712.66 : 279,741.92 = 112,072.45 : x
  2. Step 2: Convert to fraction form
    202,712.66/279,741.92 = 112,072.45/x
  3. Step 3: Cross multiply
    202,712.66x = 279,741.92 × 112,072.45
  4. Step 4: Simplify right side
    202,712.66x = 31,351,362,342.10
  5. Step 5: Solve for x
    x = 31,351,362,342.10/202,712.66
  6. Step 6: Final answer
    x = 154,659.12

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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.