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Finding the Fourth Proportional to 98,134.12, 135,426.90 and 53,422.12

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Solution

The fourth proportional to 98,134.12, 135,426.90 and 53,422.12 is: 73,723.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,134.12 : 135,426.90 = 53,422.12 : x
  2. Step 2: Convert to fraction form
    98,134.12/135,426.90 = 53,422.12/x
  3. Step 3: Cross multiply
    98,134.12x = 135,426.90 × 53,422.12
  4. Step 4: Simplify right side
    98,134.12x = 7,234,792,103.03
  5. Step 5: Solve for x
    x = 7,234,792,103.03/98,134.12
  6. Step 6: Final answer
    x = 73,723.51

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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.