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Finding the Fourth Proportional to 105,633.20, 158,158.20 and 82,305.20

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Solution

The fourth proportional to 105,633.20, 158,158.20 and 82,305.20 is: 123,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.20 : 158,158.20 = 82,305.20 : x
  2. Step 2: Convert to fraction form
    105,633.20/158,158.20 = 82,305.20/x
  3. Step 3: Cross multiply
    105,633.20x = 158,158.20 × 82,305.20
  4. Step 4: Simplify right side
    105,633.20x = 13,017,242,282.64
  5. Step 5: Solve for x
    x = 13,017,242,282.64/105,633.20
  6. Step 6: Final answer
    x = 123,230.60

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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.