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Finding the Fourth Proportional to 134,608, 201,970.32 and 72,205.60

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Solution

The fourth proportional to 134,608, 201,970.32 and 72,205.60 is: 108,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,608 : 201,970.32 = 72,205.60 : x
  2. Step 2: Convert to fraction form
    134,608/201,970.32 = 72,205.60/x
  3. Step 3: Cross multiply
    134,608x = 201,970.32 × 72,205.60
  4. Step 4: Simplify right side
    134,608x = 14,583,388,137.79
  5. Step 5: Solve for x
    x = 14,583,388,137.79/134,608
  6. Step 6: Final answer
    x = 108,339.68

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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.