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Finding the Fourth Proportional to 118,638.77, 177,981.93 and 43,759.32

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Solution

The fourth proportional to 118,638.77, 177,981.93 and 43,759.32 is: 65,647.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,638.77 : 177,981.93 = 43,759.32 : x
  2. Step 2: Convert to fraction form
    118,638.77/177,981.93 = 43,759.32/x
  3. Step 3: Cross multiply
    118,638.77x = 177,981.93 × 43,759.32
  4. Step 4: Simplify right side
    118,638.77x = 7,788,368,229.09
  5. Step 5: Solve for x
    x = 7,788,368,229.09/118,638.77
  6. Step 6: Final answer
    x = 65,647.75

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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.