Home / 161,498.40-242,138.10-90,469.92

Finding the Fourth Proportional to 161,498.40, 242,138.10 and 90,469.92

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Solution

The fourth proportional to 161,498.40, 242,138.10 and 90,469.92 is: 135,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,498.40 : 242,138.10 = 90,469.92 : x
  2. Step 2: Convert to fraction form
    161,498.40/242,138.10 = 90,469.92/x
  3. Step 3: Cross multiply
    161,498.40x = 242,138.10 × 90,469.92
  4. Step 4: Simplify right side
    161,498.40x = 21,906,214,535.95
  5. Step 5: Solve for x
    x = 21,906,214,535.95/161,498.40
  6. Step 6: Final answer
    x = 135,643.54

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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.