Home / 132,837.60-199,486.80-128,690.40

Finding the Fourth Proportional to 132,837.60, 199,486.80 and 128,690.40

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Solution

The fourth proportional to 132,837.60, 199,486.80 and 128,690.40 is: 193,258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,837.60 : 199,486.80 = 128,690.40 : x
  2. Step 2: Convert to fraction form
    132,837.60/199,486.80 = 128,690.40/x
  3. Step 3: Cross multiply
    132,837.60x = 199,486.80 × 128,690.40
  4. Step 4: Simplify right side
    132,837.60x = 25,672,036,086.72
  5. Step 5: Solve for x
    x = 25,672,036,086.72/132,837.60
  6. Step 6: Final answer
    x = 193,258.81

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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.