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Finding the Fourth Proportional to 134,616.30, 201,751.65 and 81,969.90

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Solution

The fourth proportional to 134,616.30, 201,751.65 and 81,969.90 is: 122,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,616.30 : 201,751.65 = 81,969.90 : x
  2. Step 2: Convert to fraction form
    134,616.30/201,751.65 = 81,969.90/x
  3. Step 3: Cross multiply
    134,616.30x = 201,751.65 × 81,969.90
  4. Step 4: Simplify right side
    134,616.30x = 16,537,562,575.34
  5. Step 5: Solve for x
    x = 16,537,562,575.34/134,616.30
  6. Step 6: Final answer
    x = 122,849.63

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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.