Home / 132,386.40-198,579.60-76,399.20

Finding the Fourth Proportional to 132,386.40, 198,579.60 and 76,399.20

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Solution

The fourth proportional to 132,386.40, 198,579.60 and 76,399.20 is: 114,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,386.40 : 198,579.60 = 76,399.20 : x
  2. Step 2: Convert to fraction form
    132,386.40/198,579.60 = 76,399.20/x
  3. Step 3: Cross multiply
    132,386.40x = 198,579.60 × 76,399.20
  4. Step 4: Simplify right side
    132,386.40x = 15,171,322,576.32
  5. Step 5: Solve for x
    x = 15,171,322,576.32/132,386.40
  6. Step 6: Final answer
    x = 114,598.80

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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.