Home / 128,835.28-178,036.68-96,948.64

Finding the Fourth Proportional to 128,835.28, 178,036.68 and 96,948.64

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Solution

The fourth proportional to 128,835.28, 178,036.68 and 96,948.64 is: 133,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,835.28 : 178,036.68 = 96,948.64 : x
  2. Step 2: Convert to fraction form
    128,835.28/178,036.68 = 96,948.64/x
  3. Step 3: Cross multiply
    128,835.28x = 178,036.68 × 96,948.64
  4. Step 4: Simplify right side
    128,835.28x = 17,260,413,996.12
  5. Step 5: Solve for x
    x = 17,260,413,996.12/128,835.28
  6. Step 6: Final answer
    x = 133,972.73

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1.5x scale

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.