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Finding the Fourth Proportional to 168,066.60, 252,051.30 and 61,438.20

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Solution

The fourth proportional to 168,066.60, 252,051.30 and 61,438.20 is: 92,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,066.60 : 252,051.30 = 61,438.20 : x
  2. Step 2: Convert to fraction form
    168,066.60/252,051.30 = 61,438.20/x
  3. Step 3: Cross multiply
    168,066.60x = 252,051.30 × 61,438.20
  4. Step 4: Simplify right side
    168,066.60x = 15,485,578,179.66
  5. Step 5: Solve for x
    x = 15,485,578,179.66/168,066.60
  6. Step 6: Final answer
    x = 92,139.53

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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.