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Finding the Fourth Proportional to 515,136.60, 772,704.90 and 136,056.60

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Solution

The fourth proportional to 515,136.60, 772,704.90 and 136,056.60 is: 204,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,136.60 : 772,704.90 = 136,056.60 : x
  2. Step 2: Convert to fraction form
    515,136.60/772,704.90 = 136,056.60/x
  3. Step 3: Cross multiply
    515,136.60x = 772,704.90 × 136,056.60
  4. Step 4: Simplify right side
    515,136.60x = 105,131,601,497.34
  5. Step 5: Solve for x
    x = 105,131,601,497.34/515,136.60
  6. Step 6: Final answer
    x = 204,084.90

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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.