Home / 128,258.43-176,998.73-74,523.84

Finding the Fourth Proportional to 128,258.43, 176,998.73 and 74,523.84

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Solution

The fourth proportional to 128,258.43, 176,998.73 and 74,523.84 is: 102,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,258.43 : 176,998.73 = 74,523.84 : x
  2. Step 2: Convert to fraction form
    128,258.43/176,998.73 = 74,523.84/x
  3. Step 3: Cross multiply
    128,258.43x = 176,998.73 × 74,523.84
  4. Step 4: Simplify right side
    128,258.43x = 13,190,624,662.10
  5. Step 5: Solve for x
    x = 13,190,624,662.10/128,258.43
  6. Step 6: Final answer
    x = 102,844.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.