Home / 128,448.08-177,318.96-96,629.12

Finding the Fourth Proportional to 128,448.08, 177,318.96 and 96,629.12

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Solution

The fourth proportional to 128,448.08, 177,318.96 and 96,629.12 is: 133,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,448.08 : 177,318.96 = 96,629.12 : x
  2. Step 2: Convert to fraction form
    128,448.08/177,318.96 = 96,629.12/x
  3. Step 3: Cross multiply
    128,448.08x = 177,318.96 × 96,629.12
  4. Step 4: Simplify right side
    128,448.08x = 17,134,175,064.12
  5. Step 5: Solve for x
    x = 17,134,175,064.12/128,448.08
  6. Step 6: Final answer
    x = 133,393.78

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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.