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Finding the Fourth Proportional to 91,393.24, 125,842.30 and 79,998.97

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Solution

The fourth proportional to 91,393.24, 125,842.30 and 79,998.97 is: 110,153.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,393.24 : 125,842.30 = 79,998.97 : x
  2. Step 2: Convert to fraction form
    91,393.24/125,842.30 = 79,998.97/x
  3. Step 3: Cross multiply
    91,393.24x = 125,842.30 × 79,998.97
  4. Step 4: Simplify right side
    91,393.24x = 10,067,254,382.43
  5. Step 5: Solve for x
    x = 10,067,254,382.43/91,393.24
  6. Step 6: Final answer
    x = 110,153.16

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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.