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Finding the Fourth Proportional to 147,646.79, 203,752.56 and 80,578.79

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Solution

The fourth proportional to 147,646.79, 203,752.56 and 80,578.79 is: 111,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,646.79 : 203,752.56 = 80,578.79 : x
  2. Step 2: Convert to fraction form
    147,646.79/203,752.56 = 80,578.79/x
  3. Step 3: Cross multiply
    147,646.79x = 203,752.56 × 80,578.79
  4. Step 4: Simplify right side
    147,646.79x = 16,418,133,725.44
  5. Step 5: Solve for x
    x = 16,418,133,725.44/147,646.79
  6. Step 6: Final answer
    x = 111,198.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.