Home / 186,861.81-280,126.05-68,505.55

Finding the Fourth Proportional to 186,861.81, 280,126.05 and 68,505.55

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Solution

The fourth proportional to 186,861.81, 280,126.05 and 68,505.55 is: 102,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,861.81 : 280,126.05 = 68,505.55 : x
  2. Step 2: Convert to fraction form
    186,861.81/280,126.05 = 68,505.55/x
  3. Step 3: Cross multiply
    186,861.81x = 280,126.05 × 68,505.55
  4. Step 4: Simplify right side
    186,861.81x = 19,190,189,124.58
  5. Step 5: Solve for x
    x = 19,190,189,124.58/186,861.81
  6. Step 6: Final answer
    x = 102,697.22

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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.