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Finding the Fourth Proportional to 136,770.60, 205,136.70 and 43,285.80

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Solution

The fourth proportional to 136,770.60, 205,136.70 and 43,285.80 is: 64,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,770.60 : 205,136.70 = 43,285.80 : x
  2. Step 2: Convert to fraction form
    136,770.60/205,136.70 = 43,285.80/x
  3. Step 3: Cross multiply
    136,770.60x = 205,136.70 × 43,285.80
  4. Step 4: Simplify right side
    136,770.60x = 8,879,506,168.86
  5. Step 5: Solve for x
    x = 8,879,506,168.86/136,770.60
  6. Step 6: Final answer
    x = 64,922.62

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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.