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Finding the Fourth Proportional to 136,435.92, 204,275.92 and 69,732.40

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Solution

The fourth proportional to 136,435.92, 204,275.92 and 69,732.40 is: 104,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,435.92 : 204,275.92 = 69,732.40 : x
  2. Step 2: Convert to fraction form
    136,435.92/204,275.92 = 69,732.40/x
  3. Step 3: Cross multiply
    136,435.92x = 204,275.92 × 69,732.40
  4. Step 4: Simplify right side
    136,435.92x = 14,244,650,163.81
  5. Step 5: Solve for x
    x = 14,244,650,163.81/136,435.92
  6. Step 6: Final answer
    x = 104,405.42

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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.