Home / 287,103.03-430,654.68-129,146.94

Finding the Fourth Proportional to 287,103.03, 430,654.68 and 129,146.94

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Solution

The fourth proportional to 287,103.03, 430,654.68 and 129,146.94 is: 193,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,103.03 : 430,654.68 = 129,146.94 : x
  2. Step 2: Convert to fraction form
    287,103.03/430,654.68 = 129,146.94/x
  3. Step 3: Cross multiply
    287,103.03x = 430,654.68 × 129,146.94
  4. Step 4: Simplify right side
    287,103.03x = 55,617,734,118.68
  5. Step 5: Solve for x
    x = 55,617,734,118.68/287,103.03
  6. Step 6: Final answer
    x = 193,720.47

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Similar ratio
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1.5x scale

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.