Home / 115,156.45-158,843.21-79,284.18

Finding the Fourth Proportional to 115,156.45, 158,843.21 and 79,284.18

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Solution

The fourth proportional to 115,156.45, 158,843.21 and 79,284.18 is: 109,362.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,156.45 : 158,843.21 = 79,284.18 : x
  2. Step 2: Convert to fraction form
    115,156.45/158,843.21 = 79,284.18/x
  3. Step 3: Cross multiply
    115,156.45x = 158,843.21 × 79,284.18
  4. Step 4: Simplify right side
    115,156.45x = 12,593,753,653.42
  5. Step 5: Solve for x
    x = 12,593,753,653.42/115,156.45
  6. Step 6: Final answer
    x = 109,362.12

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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.