Home / 128,848.28-178,054.66-96,961.64

Finding the Fourth Proportional to 128,848.28, 178,054.66 and 96,961.64

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Solution

The fourth proportional to 128,848.28, 178,054.66 and 96,961.64 is: 133,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.28 : 178,054.66 = 96,961.64 : x
  2. Step 2: Convert to fraction form
    128,848.28/178,054.66 = 96,961.64/x
  3. Step 3: Cross multiply
    128,848.28x = 178,054.66 × 96,961.64
  4. Step 4: Simplify right side
    128,848.28x = 17,264,471,843.24
  5. Step 5: Solve for x
    x = 17,264,471,843.24/128,848.28
  6. Step 6: Final answer
    x = 133,990.70

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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.