Home / 261,136.41-391,732.85-111,392.52

Finding the Fourth Proportional to 261,136.41, 391,732.85 and 111,392.52

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Solution

The fourth proportional to 261,136.41, 391,732.85 and 111,392.52 is: 167,100.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,136.41 : 391,732.85 = 111,392.52 : x
  2. Step 2: Convert to fraction form
    261,136.41/391,732.85 = 111,392.52/x
  3. Step 3: Cross multiply
    261,136.41x = 391,732.85 × 111,392.52
  4. Step 4: Simplify right side
    261,136.41x = 43,636,109,328.28
  5. Step 5: Solve for x
    x = 43,636,109,328.28/261,136.41
  6. Step 6: Final answer
    x = 167,100.82

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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.