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Finding the Fourth Proportional to 147,646.80, 203,752.53 and 80,578.80

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Solution

The fourth proportional to 147,646.80, 203,752.53 and 80,578.80 is: 111,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,646.80 : 203,752.53 = 80,578.80 : x
  2. Step 2: Convert to fraction form
    147,646.80/203,752.53 = 80,578.80/x
  3. Step 3: Cross multiply
    147,646.80x = 203,752.53 × 80,578.80
  4. Step 4: Simplify right side
    147,646.80x = 16,418,134,364.36
  5. Step 5: Solve for x
    x = 16,418,134,364.36/147,646.80
  6. Step 6: Final answer
    x = 111,198.71

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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.