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Finding the Fourth Proportional to 136,539.30, 204,776.12 and 69,945.15

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Solution

The fourth proportional to 136,539.30, 204,776.12 and 69,945.15 is: 104,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,539.30 : 204,776.12 = 69,945.15 : x
  2. Step 2: Convert to fraction form
    136,539.30/204,776.12 = 69,945.15/x
  3. Step 3: Cross multiply
    136,539.30x = 204,776.12 × 69,945.15
  4. Step 4: Simplify right side
    136,539.30x = 14,323,096,080.09
  5. Step 5: Solve for x
    x = 14,323,096,080.09/136,539.30
  6. Step 6: Final answer
    x = 104,900.90

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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.