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Finding the Fourth Proportional to 119,351.50, 164,701.78 and 65,636.51

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Solution

The fourth proportional to 119,351.50, 164,701.78 and 65,636.51 is: 90,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,351.50 : 164,701.78 = 65,636.51 : x
  2. Step 2: Convert to fraction form
    119,351.50/164,701.78 = 65,636.51/x
  3. Step 3: Cross multiply
    119,351.50x = 164,701.78 × 65,636.51
  4. Step 4: Simplify right side
    119,351.50x = 10,810,449,968.84
  5. Step 5: Solve for x
    x = 10,810,449,968.84/119,351.50
  6. Step 6: Final answer
    x = 90,576.58

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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.