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Finding the Fourth Proportional to 102,485.59, 153,662.14 and 40,162.39

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Solution

The fourth proportional to 102,485.59, 153,662.14 and 40,162.39 is: 60,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,485.59 : 153,662.14 = 40,162.39 : x
  2. Step 2: Convert to fraction form
    102,485.59/153,662.14 = 40,162.39/x
  3. Step 3: Cross multiply
    102,485.59x = 153,662.14 × 40,162.39
  4. Step 4: Simplify right side
    102,485.59x = 6,171,438,794.91
  5. Step 5: Solve for x
    x = 6,171,438,794.91/102,485.59
  6. Step 6: Final answer
    x = 60,217.62

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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.