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Finding the Fourth Proportional to 169,003.28, 253,627.01 and 66,435.86

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Solution

The fourth proportional to 169,003.28, 253,627.01 and 66,435.86 is: 99,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,003.28 : 253,627.01 = 66,435.86 : x
  2. Step 2: Convert to fraction form
    169,003.28/253,627.01 = 66,435.86/x
  3. Step 3: Cross multiply
    169,003.28x = 253,627.01 × 66,435.86
  4. Step 4: Simplify right side
    169,003.28x = 16,849,928,528.58
  5. Step 5: Solve for x
    x = 16,849,928,528.58/169,003.28
  6. Step 6: Final answer
    x = 99,701.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.