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Finding the Fourth Proportional to 119,881.84, 165,425.16 and 66,163.39

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Solution

The fourth proportional to 119,881.84, 165,425.16 and 66,163.39 is: 91,298.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,881.84 : 165,425.16 = 66,163.39 : x
  2. Step 2: Convert to fraction form
    119,881.84/165,425.16 = 66,163.39/x
  3. Step 3: Cross multiply
    119,881.84x = 165,425.16 × 66,163.39
  4. Step 4: Simplify right side
    119,881.84x = 10,945,089,376.89
  5. Step 5: Solve for x
    x = 10,945,089,376.89/119,881.84
  6. Step 6: Final answer
    x = 91,298.98

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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.