Home / 430,629.10-645,943.65-131,107.30

Finding the Fourth Proportional to 430,629.10, 645,943.65 and 131,107.30

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Solution

The fourth proportional to 430,629.10, 645,943.65 and 131,107.30 is: 196,660.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,629.10 : 645,943.65 = 131,107.30 : x
  2. Step 2: Convert to fraction form
    430,629.10/645,943.65 = 131,107.30/x
  3. Step 3: Cross multiply
    430,629.10x = 645,943.65 × 131,107.30
  4. Step 4: Simplify right side
    430,629.10x = 84,687,927,903.65
  5. Step 5: Solve for x
    x = 84,687,927,903.65/430,629.10
  6. Step 6: Final answer
    x = 196,660.95

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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.