Home / 115,016.78-172,295.44-91,364.38

Finding the Fourth Proportional to 115,016.78, 172,295.44 and 91,364.38

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Solution

The fourth proportional to 115,016.78, 172,295.44 and 91,364.38 is: 136,864.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,016.78 : 172,295.44 = 91,364.38 : x
  2. Step 2: Convert to fraction form
    115,016.78/172,295.44 = 91,364.38/x
  3. Step 3: Cross multiply
    115,016.78x = 172,295.44 × 91,364.38
  4. Step 4: Simplify right side
    115,016.78x = 15,741,665,393.28
  5. Step 5: Solve for x
    x = 15,741,665,393.28/115,016.78
  6. Step 6: Final answer
    x = 136,864.07

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1.5x scale

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.