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Finding the Fourth Proportional to 103,477.59, 155,324.97 and 91,706.67

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Solution

The fourth proportional to 103,477.59, 155,324.97 and 91,706.67 is: 137,656.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,477.59 : 155,324.97 = 91,706.67 : x
  2. Step 2: Convert to fraction form
    103,477.59/155,324.97 = 91,706.67/x
  3. Step 3: Cross multiply
    103,477.59x = 155,324.97 × 91,706.67
  4. Step 4: Simplify right side
    103,477.59x = 14,244,335,766.55
  5. Step 5: Solve for x
    x = 14,244,335,766.55/103,477.59
  6. Step 6: Final answer
    x = 137,656.24

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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.