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Finding the Fourth Proportional to 98,003.40, 146,786.40 and 80,507.40

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Solution

The fourth proportional to 98,003.40, 146,786.40 and 80,507.40 is: 120,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,003.40 : 146,786.40 = 80,507.40 : x
  2. Step 2: Convert to fraction form
    98,003.40/146,786.40 = 80,507.40/x
  3. Step 3: Cross multiply
    98,003.40x = 146,786.40 × 80,507.40
  4. Step 4: Simplify right side
    98,003.40x = 11,817,391,419.36
  5. Step 5: Solve for x
    x = 11,817,391,419.36/98,003.40
  6. Step 6: Final answer
    x = 120,581.44

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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.