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Finding the Fourth Proportional to 202,335.86, 279,211.56 and 111,689.60

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Solution

The fourth proportional to 202,335.86, 279,211.56 and 111,689.60 is: 154,125.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,335.86 : 279,211.56 = 111,689.60 : x
  2. Step 2: Convert to fraction form
    202,335.86/279,211.56 = 111,689.60/x
  3. Step 3: Cross multiply
    202,335.86x = 279,211.56 × 111,689.60
  4. Step 4: Simplify right side
    202,335.86x = 31,185,027,451.78
  5. Step 5: Solve for x
    x = 31,185,027,451.78/202,335.86
  6. Step 6: Final answer
    x = 154,125.06

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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.