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Finding the Fourth Proportional to 103,670.53, 155,505.80 and 51,182.53

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Solution

The fourth proportional to 103,670.53, 155,505.80 and 51,182.53 is: 76,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.53 : 155,505.80 = 51,182.53 : x
  2. Step 2: Convert to fraction form
    103,670.53/155,505.80 = 51,182.53/x
  3. Step 3: Cross multiply
    103,670.53x = 155,505.80 × 51,182.53
  4. Step 4: Simplify right side
    103,670.53x = 7,959,180,273.67
  5. Step 5: Solve for x
    x = 7,959,180,273.67/103,670.53
  6. Step 6: Final answer
    x = 76,773.80

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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.