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Finding the Fourth Proportional to 202,654.12, 279,654 and 112,005.40

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Solution

The fourth proportional to 202,654.12, 279,654 and 112,005.40 is: 154,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,654.12 : 279,654 = 112,005.40 : x
  2. Step 2: Convert to fraction form
    202,654.12/279,654 = 112,005.40/x
  3. Step 3: Cross multiply
    202,654.12x = 279,654 × 112,005.40
  4. Step 4: Simplify right side
    202,654.12x = 31,322,758,131.60
  5. Step 5: Solve for x
    x = 31,322,758,131.60/202,654.12
  6. Step 6: Final answer
    x = 154,562.65

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1.5x scale

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.