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Finding the Fourth Proportional to 176,128.80, 264,028.80 and 69,513.60

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Solution

The fourth proportional to 176,128.80, 264,028.80 and 69,513.60 is: 104,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,128.80 : 264,028.80 = 69,513.60 : x
  2. Step 2: Convert to fraction form
    176,128.80/264,028.80 = 69,513.60/x
  3. Step 3: Cross multiply
    176,128.80x = 264,028.80 × 69,513.60
  4. Step 4: Simplify right side
    176,128.80x = 18,353,592,391.68
  5. Step 5: Solve for x
    x = 18,353,592,391.68/176,128.80
  6. Step 6: Final answer
    x = 104,205.52

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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.