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Finding the Fourth Proportional to 168,545.80, 252,818.70 and 102,406.60

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Solution

The fourth proportional to 168,545.80, 252,818.70 and 102,406.60 is: 153,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,545.80 : 252,818.70 = 102,406.60 : x
  2. Step 2: Convert to fraction form
    168,545.80/252,818.70 = 102,406.60/x
  3. Step 3: Cross multiply
    168,545.80x = 252,818.70 × 102,406.60
  4. Step 4: Simplify right side
    168,545.80x = 25,890,303,483.42
  5. Step 5: Solve for x
    x = 25,890,303,483.42/168,545.80
  6. Step 6: Final answer
    x = 153,609.90

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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.