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Finding the Fourth Proportional to 76,136.30, 114,211.65 and 20,732.30

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Solution

The fourth proportional to 76,136.30, 114,211.65 and 20,732.30 is: 31,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,136.30 : 114,211.65 = 20,732.30 : x
  2. Step 2: Convert to fraction form
    76,136.30/114,211.65 = 20,732.30/x
  3. Step 3: Cross multiply
    76,136.30x = 114,211.65 × 20,732.30
  4. Step 4: Simplify right side
    76,136.30x = 2,367,870,191.30
  5. Step 5: Solve for x
    x = 2,367,870,191.30/76,136.30
  6. Step 6: Final answer
    x = 31,100.41

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1.5x scale

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.