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Finding the Fourth Proportional to 136,771.40, 205,136.58 and 43,265

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Solution

The fourth proportional to 136,771.40, 205,136.58 and 43,265 is: 64,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,771.40 : 205,136.58 = 43,265 : x
  2. Step 2: Convert to fraction form
    136,771.40/205,136.58 = 43,265/x
  3. Step 3: Cross multiply
    136,771.40x = 205,136.58 × 43,265
  4. Step 4: Simplify right side
    136,771.40x = 8,875,234,133.70
  5. Step 5: Solve for x
    x = 8,875,234,133.70/136,771.40
  6. Step 6: Final answer
    x = 64,891.01

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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.