Home / 261,166.89-391,861.07-142,699.85

Finding the Fourth Proportional to 261,166.89, 391,861.07 and 142,699.85

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Solution

The fourth proportional to 261,166.89, 391,861.07 and 142,699.85 is: 214,110.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,166.89 : 391,861.07 = 142,699.85 : x
  2. Step 2: Convert to fraction form
    261,166.89/391,861.07 = 142,699.85/x
  3. Step 3: Cross multiply
    261,166.89x = 391,861.07 × 142,699.85
  4. Step 4: Simplify right side
    261,166.89x = 55,918,515,909.84
  5. Step 5: Solve for x
    x = 55,918,515,909.84/261,166.89
  6. Step 6: Final answer
    x = 214,110.28

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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.