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Finding the Fourth Proportional to 136,479.87, 204,742.08 and 42,963.75

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Solution

The fourth proportional to 136,479.87, 204,742.08 and 42,963.75 is: 64,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,479.87 : 204,742.08 = 42,963.75 : x
  2. Step 2: Convert to fraction form
    136,479.87/204,742.08 = 42,963.75/x
  3. Step 3: Cross multiply
    136,479.87x = 204,742.08 × 42,963.75
  4. Step 4: Simplify right side
    136,479.87x = 8,796,487,539.60
  5. Step 5: Solve for x
    x = 8,796,487,539.60/136,479.87
  6. Step 6: Final answer
    x = 64,452.64

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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.