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Finding the Fourth Proportional to 119,915.67, 165,479.27 and 66,199.53

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Solution

The fourth proportional to 119,915.67, 165,479.27 and 66,199.53 is: 91,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,915.67 : 165,479.27 = 66,199.53 : x
  2. Step 2: Convert to fraction form
    119,915.67/165,479.27 = 66,199.53/x
  3. Step 3: Cross multiply
    119,915.67x = 165,479.27 × 66,199.53
  4. Step 4: Simplify right side
    119,915.67x = 10,954,649,629.84
  5. Step 5: Solve for x
    x = 10,954,649,629.84/119,915.67
  6. Step 6: Final answer
    x = 91,352.95

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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.