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Finding the Fourth Proportional to 88,212.45, 131,652 and 79,699.77

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Solution

The fourth proportional to 88,212.45, 131,652 and 79,699.77 is: 118,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,212.45 : 131,652 = 79,699.77 : x
  2. Step 2: Convert to fraction form
    88,212.45/131,652 = 79,699.77/x
  3. Step 3: Cross multiply
    88,212.45x = 131,652 × 79,699.77
  4. Step 4: Simplify right side
    88,212.45x = 10,492,634,120.04
  5. Step 5: Solve for x
    x = 10,492,634,120.04/88,212.45
  6. Step 6: Final answer
    x = 118,947.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.