Home / 128,845.60-193,268.40-57,768.10

Finding the Fourth Proportional to 128,845.60, 193,268.40 and 57,768.10

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Solution

The fourth proportional to 128,845.60, 193,268.40 and 57,768.10 is: 86,652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,845.60 : 193,268.40 = 57,768.10 : x
  2. Step 2: Convert to fraction form
    128,845.60/193,268.40 = 57,768.10/x
  3. Step 3: Cross multiply
    128,845.60x = 193,268.40 × 57,768.10
  4. Step 4: Simplify right side
    128,845.60x = 11,164,748,258.04
  5. Step 5: Solve for x
    x = 11,164,748,258.04/128,845.60
  6. Step 6: Final answer
    x = 86,652.15

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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.