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Finding the Fourth Proportional to 168,019.60, 252,102.30 and 84,913.60

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Solution

The fourth proportional to 168,019.60, 252,102.30 and 84,913.60 is: 127,407.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,019.60 : 252,102.30 = 84,913.60 : x
  2. Step 2: Convert to fraction form
    168,019.60/252,102.30 = 84,913.60/x
  3. Step 3: Cross multiply
    168,019.60x = 252,102.30 × 84,913.60
  4. Step 4: Simplify right side
    168,019.60x = 21,406,913,861.28
  5. Step 5: Solve for x
    x = 21,406,913,861.28/168,019.60
  6. Step 6: Final answer
    x = 127,407.24

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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.