Home / 202,828.32-279,907.92-112,190.40

Finding the Fourth Proportional to 202,828.32, 279,907.92 and 112,190.40

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Solution

The fourth proportional to 202,828.32, 279,907.92 and 112,190.40 is: 154,825.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,828.32 : 279,907.92 = 112,190.40 : x
  2. Step 2: Convert to fraction form
    202,828.32/279,907.92 = 112,190.40/x
  3. Step 3: Cross multiply
    202,828.32x = 279,907.92 × 112,190.40
  4. Step 4: Simplify right side
    202,828.32x = 31,402,981,507.97
  5. Step 5: Solve for x
    x = 31,402,981,507.97/202,828.32
  6. Step 6: Final answer
    x = 154,825.43

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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.