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Finding the Fourth Proportional to 120,752.86, 180,893.67 and 79,073.50

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Solution

The fourth proportional to 120,752.86, 180,893.67 and 79,073.50 is: 118,455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,752.86 : 180,893.67 = 79,073.50 : x
  2. Step 2: Convert to fraction form
    120,752.86/180,893.67 = 79,073.50/x
  3. Step 3: Cross multiply
    120,752.86x = 180,893.67 × 79,073.50
  4. Step 4: Simplify right side
    120,752.86x = 14,303,895,614.75
  5. Step 5: Solve for x
    x = 14,303,895,614.75/120,752.86
  6. Step 6: Final answer
    x = 118,455.96

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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.