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Finding the Fourth Proportional to 103,369.73, 142,672.46 and 63,074.86

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Solution

The fourth proportional to 103,369.73, 142,672.46 and 63,074.86 is: 87,056.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,369.73 : 142,672.46 = 63,074.86 : x
  2. Step 2: Convert to fraction form
    103,369.73/142,672.46 = 63,074.86/x
  3. Step 3: Cross multiply
    103,369.73x = 142,672.46 × 63,074.86
  4. Step 4: Simplify right side
    103,369.73x = 8,999,044,768.30
  5. Step 5: Solve for x
    x = 8,999,044,768.30/103,369.73
  6. Step 6: Final answer
    x = 87,056.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.