Home / 191,968.20-287,952.30-128,982.60

Finding the Fourth Proportional to 191,968.20, 287,952.30 and 128,982.60

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Solution

The fourth proportional to 191,968.20, 287,952.30 and 128,982.60 is: 193,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,968.20 : 287,952.30 = 128,982.60 : x
  2. Step 2: Convert to fraction form
    191,968.20/287,952.30 = 128,982.60/x
  3. Step 3: Cross multiply
    191,968.20x = 287,952.30 × 128,982.60
  4. Step 4: Simplify right side
    191,968.20x = 37,140,836,329.98
  5. Step 5: Solve for x
    x = 37,140,836,329.98/191,968.20
  6. Step 6: Final answer
    x = 193,473.90

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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.