Home / 261,511.26-391,929.66-126,543.60

Finding the Fourth Proportional to 261,511.26, 391,929.66 and 126,543.60

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Solution

The fourth proportional to 261,511.26, 391,929.66 and 126,543.60 is: 189,652.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,511.26 : 391,929.66 = 126,543.60 : x
  2. Step 2: Convert to fraction form
    261,511.26/391,929.66 = 126,543.60/x
  3. Step 3: Cross multiply
    261,511.26x = 391,929.66 × 126,543.60
  4. Step 4: Simplify right side
    261,511.26x = 49,596,190,123.18
  5. Step 5: Solve for x
    x = 49,596,190,123.18/261,511.26
  6. Step 6: Final answer
    x = 189,652.22

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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.