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Finding the Fourth Proportional to 169,741.60, 254,266.80 and 86,682.40

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Solution

The fourth proportional to 169,741.60, 254,266.80 and 86,682.40 is: 129,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,741.60 : 254,266.80 = 86,682.40 : x
  2. Step 2: Convert to fraction form
    169,741.60/254,266.80 = 86,682.40/x
  3. Step 3: Cross multiply
    169,741.60x = 254,266.80 × 86,682.40
  4. Step 4: Simplify right side
    169,741.60x = 22,040,456,464.32
  5. Step 5: Solve for x
    x = 22,040,456,464.32/169,741.60
  6. Step 6: Final answer
    x = 129,847.11

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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.