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Finding the Fourth Proportional to 202,687.80, 279,698.22 and 112,038.36

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Solution

The fourth proportional to 202,687.80, 279,698.22 and 112,038.36 is: 154,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,687.80 : 279,698.22 = 112,038.36 : x
  2. Step 2: Convert to fraction form
    202,687.80/279,698.22 = 112,038.36/x
  3. Step 3: Cross multiply
    202,687.80x = 279,698.22 × 112,038.36
  4. Step 4: Simplify right side
    202,687.80x = 31,336,929,863.72
  5. Step 5: Solve for x
    x = 31,336,929,863.72/202,687.80
  6. Step 6: Final answer
    x = 154,606.89

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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.